Parotid gland histology

Histology @ Yale. Slide List. Parotid Gland. Parotid Gland The parotid gland is composed mainly of serous cells and produces saliva that is watery and rich in enzymes (amylase and lysozyme) and antibodies. Two types of cells are visible in this section. The abundant serous exocrine cells make up the bulk of the gland Sebaceous type glands are mixed with salivary gland acini in 10 - 40% of normal parotid glands, often in periductal locations in interlobular ducts; either single, isolated sebaceous type cells within serous or mucinous salivary acini or as fully developed sebaceous glands (Arch Pathol Lab Med 2004;128:245 The parotid gland acini are serous in all three species, characterized by pyramidal cells surrounding the central acinar lumen (Fig. 8.6).In rodents, the parotid and exorbital lacrimal glands have similar histomorphology, resembling the exocrine pancreas (see Chapter 14: Pancreas).Due to the close anatomic proximity of these two facial glands, the exorbital lacrimal gland is often seen in. Alveolus in, parotid gland - entirely serous occ, mucous submandibular gland - mixed Sublingual gland - mucous 13. • Secretory unit/ gland, with only one type of cell - homocrine more than one variety - heterocrine All the 3 major salivary glands are heterocrine 14

Robert Lewis Maynard, Noel Downes, in Anatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research, 2019. Parotid Gland. The parotid gland is a serous gland, pinkish in colour, divided into several lobes further subdivided into lobules, which can be seen as small discrete areas subdividing the surface of the gland. This subdivided surface allows the gland to be. Parotid tumors are abnormal growths of cells (tumors) that form in the parotid glands. The parotid glands are two salivary glands that sit just in front of the ears on each side of the face. Salivary glands produce saliva to aid in chewing and digesting food. There are many salivary glands in the lips, cheeks, mouth and throat

Parotid gland histology 06

Be able to identify parotid, submandibular and sublingual salivary glands on the basis of histological appearance and by the types of secretion produced by each gland. Be able to identify striated ducts of the salivary gland at the light and electron microscope level and correlate the structural features of the constituent cells to the. Clinical Relevance: Disorders of the Parotid Gland Parotid Gland Tumours. The parotid gland is the most common site of a salivary gland tumour. These tumours are usually benign, such as an adenolymphoma.. In contrast, tumours of the submandibular and sublingual glands are less common, but more likely to be malignant.. Treatment usually involves surgical excision of the tumour and parotid gland.

The parotid gland, a large salivary gland, is one of them. Several epithelial types are found in the duct system of the parotid. The smallest ducts, which are embedded in the secretory tissue (intralobular ducts), are lined by cuboidal or columnar epithelia Parotid Gland Definition. The parotid gland is one of three salivary glands contained within the human body. The same applies to many animals. It is the largest of the three glands and the biggest producer of saliva. Saliva has lubricating and digestive properties that help protect the alimentary canal linings during meals.. Parotid Gland Overvie

Salivary gland neoplasm [7] [10] [12] [13] Salivary gland cancer is a cancer that forms in tissues of a salivary gland. Salivary gland cancer is rare, with 2% of head and neck tumors forming in the salivary glands, the majority in the parotid. Salivary gland neoplasms are classified by the World Health Organization as primary or secondary. The parotid gland (or simply parotid, latin: glandula parotis, glandula parotidea) is the largest of the salivary glands and is located on each side of the head in front of the ears.. The parotid gland is a paired organ and has two portions: the deep portion that is located topographically in the retromandibular fossa, and the superficial portion of the parotid gland that is situated within. Sublingual glands have mainly mucous acini. Parotid glands have mainly serous acini. Submandibular glands have a mixture of mucous and serous acini. Mucous acini stain more weakly than serous acini, because of the techniques used to produce the sections. (look back at histological techniques to remind yourself) Major salivary glands are characterized by the presence of numerous excretory units that consist of acini and a peculiar duct system. Under normal conditions, sebaceous glands are annexed to the duct system in the parotid and the submaxillary glands. The excretion of the saliva is assisted by the my Parotid. This image was obtained with a 60x oil immersion objective from MH 094. The increased resolution is helpful in viewing secretory cells and ducts of the parotid. The minimal functional unit of the parotid is a lobule defined by a thin layer of connective tissue. Serous Cells (#1 and #2) - arranged as acini of pyramidal serous cells.

The parotid gland has an intimate relationship with the facial nerve, which subdivides into its branches as it passes through the parotid. The submandibular glands are walnut-sized paired structures, lying beneath and in front of the angle of the jaw, wrapping around the posterior edge of the mylohyoid muscle Because it is composed entirely of acini, the parotid has more numerous ducts than the other salivary glands. Junction of acini with intercalated duct The lining cells of Intercalated ducts add bicarbonate to the secretory product and absorb chloride ions from it Dec 2, 2018 - Explore salma99eg's board Parotid gland on Pinterest. See more ideas about Parotid gland, Gland, Salivary gland a short tutorial on the salivary glands and their histological structures !!! we in basic med always keep on discovering new ways for students to understand and learn medicine more faster

Parotid Gland - Yale Universit

Pathology Outlines - Histology

Histopathology images of Myoepithelioma by PathPedia

Histology @ Yale. Slide List. Sublingual Gland. Sublingual Gland Sublingual glands are composed primarily of mucous cells. The mucous acini are capped by serous demilunes that secrete lysozyme The major salivary glands, three pairs in total, are found in and around your mouth and throat. The major salivary glands are the parotid, submandibular, and sublingual glands.The parotid glands are located in front and beneath the ear. A duct, called Stensen's duct, drains saliva from the parotid gland into the mouth, at the area of the upper cheeks Parotid. The parotid is the largest of the salivary glands. It is almost entirely serous with only a few scattered mucous cells. Stroma - the connective tissue component of the gland. Capsule - connective tissue that encapsulates the gland. Lobes - connective tissue divides the gland into lobes

Gross anatomy. The parotid gland is wrapped around the mandibular ramus and extends to a position anterior and inferior to the ear. It has superficial and deep lobes, separated by the facial nerve. The facial nerve and its branches pass through the parotid gland, as does the external carotid artery and retromandibular vein.The external carotid artery forms its two terminal branches within the. 1. Radiol Clin North Am. 1998 Sep;36(5):941-66, vi. Salivary glands. Silvers AR(1), Som PM. Author information: (1)Mount Sinai School of Medicine, City University of New York, New York, USA. This article discusses the anatomy, physiology, and pathology of the parotid, submandibular, and sublingual glands, which often are referred to as the major salivary glands

Parotid Gland Tumor is more common in the distal portion of the gland presenting as a discrete mass. The abnormal growth typically presents as slow-growing, solitary, unfixed neoplasm in the parotid area, although some are multinodular and fixed. Symptoms in most patients occur in a duration of less than a year up to several decades The salivary glands arise as epithelial buds in the oral cavity between week 6 to 7 (GA week 8 to 9) and extend into the underlying mesenchyme. The three paired groups of salivary glands are named by their anatomical location: parotid, submandibular and sublingual. The adult glands are mucoserous tubuloacinar glands, with secretory acini and the initial part of the duct system also. The gland most likely affected is the parotid gland. Only pleomorphic adenoma is a more common benign parotid tumor. Warthin's tumor is slow growing, painless, and primarily affects older individuals. The tumor is bilateral, and highly unlikely to become malignant

Histopathology images of Warthin tumor by PathPedia

Having abnormal parotid ducts. This can be the narrowing of the duct(s) at some point and lead also to an obstruction of the saliva. If you have the enlargement of nearby lymph nodes because of a tumor or infection it can also lead to parotid gland swelling Epidemiology. Pleomorphic adenomas account for 70-80% of benign salivary gland tumors and are especially common in the parotid gland (see below) 1,6.. Patients are typically middle aged and the incidence is slightly higher in females than males (2:1) 1,13.. The oncogenic simian virus (SV40) may play a role in onset or progression and prior head and neck irradiation is a risk factor for the. Of the major salivary glands, the parotid gland has the highest rate of tumor association, accounting for 64% to 80% of primary epithelial salivary gland tumors. Most parotid tumors are benign with malignancy only comprising approximately 15% to 32%. 1 The typical clinical presentation is a painless mass or swelling in the cheek about the. Identifying the glands. The three main glands: Parotid: Serous glands - lower viscosity, acini (lobules). Most tumours in this gland are benign. Submandibular: Serous and mucinous glands. Serous ~90% of gland. Mucinous ~10% of gland. Serous demilunes = mucinous gland with cap consisting of a serous glandular component. Demilune = crescent

Jan 7, 2020 - Explore drgahmad's board salivary glands on Pinterest. See more ideas about Salivary gland, Glands, Parotid gland Histology of the Parotid Gland: 10.4018/978-1-7998-5603-.ch002: This chapter describes the characteristic histological features of the parotid gland. The microanatomy of the parotid gland includes the following: strom Surgery to treat a parotid gland tumor is called a parotidectomy. It requires great precision because the surgeon has to locate and operate around these important structures. Learn more about parotidectomy. Submandibular Glands About the size of a walnut, the submandibular glands are located below the jaw. The saliva produced in these glands is.

Compare these glands to the submandibular gland above. In the sublingual gland, note that most of the acini are mucous. By contrast, note that the acini in the parotid gland are entirely serous (the numerous empty spaces are adipocytes indicative of fatty infiltation of the parotid gland that occurs with aging in humans). You may also find it. The pancreas and parotid gland differ in the amount of stromal fat, with adipocytes common in the stroma of the parotid but fairly rare in the pancreas. [These details may serve to determine whether a small unlabelled specimen belongs to pancreas or to the parotid gland , which is also a compound , acinar , serous , exocrine gland

Parotid Gland - an overview ScienceDirect Topic

Parotid Gland Histology. The parotid gland is part of the salivary glands found in humans. They are two and are located in from of the ears and extend to the lower borders of the jaw bone, each on one side of the face Histology Learning System [ Digestive System: Oral Cavity and Teeth, parotid gland Parotid glands have mainly serous acini and there is abundance of fat in this gland. The secretory tissue is divided into many lobules by connective tissue. In the connective tissue, blood vessels, nerves and large excretory ducts are present. The acinar cells are quite uniform in structure, size and staining, because they all produce serous secretions. [ Health Sciences Events/Series in the IME Video Librar Cysts in the parotid gland represent a small percentage of benign parotid masses. They usually arise within the gland from salivary or non-salivary parotid tissue, and may be congenital or acquired. Some, however, may arise from surrounding structures

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185A Sublingual gland mucicarmine H&E Webscope Imagescope. Unlike the parotid gland, the submandibular and sublingual glands possess both mucous and serous secretory cells. Slides 183-2(submandibular) and 185A (sublingual) are stained with mucicarmine which specifically stains mucus red. Survey the two alternate slides to compare the relative. Histology Learning System [ Digestive System: Oral Cavity and Teeth, parotid gland, striated and intercalated ducts Most primary epithelial SGTs occur in the parotid glands; about 10% occur in the submandibular glands, and less than 1% develops in the sublingual glands. Minor glands are involved in 9-23% of SGT cases. Between 54 and 79% of all tumors are benign, and 21 to 46% are malignant. Most SGTs occurring in the sublingual glands are malignant (70-90%) Nov 11, 2014 - parotid gland histology | salivary gland the major salivary glands are the paired parotid.

  1. The parotid glands are the largest salivary glands in humans and are frequently involved in disease processes. Approximately 25% of parotid masses are nonneoplastic; the remaining 75% are neoplastic. Nonneoplastic causes of parotid enlargement include cysts, parotitis , lymphoepithelial lesions associated with AIDS, collagen vascular diseases.
  2. ed to deter
  3. The parotid gland is a major salivary gland in many animals. In humans, the two parotid glands are present on either side of the mouth and in front of both ears. They are the largest of the salivary glands. Histology. The parotid gland. The gland has a capsule of its own of dense connective tissue, but is also provided with a false capsule.

If you are working with a site/histology that only summary stages and you need to directly code it, please use the SEER Summary Stage 2000 manual Notes C079 Parotid gland **Note 1:** This schema is based on the UICC chapter *Major Salivary Glands,* pages 54-57 The salivary glands produce saliva to moisten the mouth, to help protect teeth from decay, and to digest food. The three major salivary glands are the parotid gland, submandibular gland, and sublingual glands. The parotid gland is the largest salivary gland and makes 25% of the saliva. Parotid tumor is the most common salivary gland tumors 19-Concerning the histology of digestive glands, all are true except a. the parotid acini are capped by serous demilunes & deliver their secretion into intercalated ducts 20-Histology of the parotid gland all true except: a. presence of Centroacinar cells. 21-Regarding the histology of the liver all following statementare true except: a Thyroid gland histology. Author: Lorenzo Crumbie MBBS, BSc • Reviewer: Dimitrios Mytilinaios MD, PhD • Last reviewed: June 25, 2020 The thyroid gland is a bilobular endocrine gland that is found in the neck, anterior and inferior to the larynx.Grossly, the gland appears brownish-red and the left and right lobes are connected by an isthmus The gland is surrounded by two capsules (an exception): regular capsule and outer capsule (part of deep facia of the neck) Contents: facial nerve and its branches, retromandibular vein, external carotid artery, auriculotemporal nerve, parotid lymph nodes. The parotid gland lies in the parotid bed that is formed by

Salivary Gland Histology study guide by michelleberg3 includes 44 questions covering vocabulary, terms and more. Quizlet flashcards, activities and games help you improve your grades The parotid gland is of ectodermal origin whilst the submandibular and sublingual glands more likely are of endodermal derivation. The adult parotid gland is the largest and weighs between approximately 25 g, the submandibular 7-8 g, whilst the principal sublingual only approximately 3 g. The parotid gland is located below the external.

Parotid tumors - Overview - Mayo Clini

  1. Parotid gland histology. Note lighter pink stroma (lighter pink shading) that forms a framework for the parenchyma (dark red cells glandular cells) Parotid gland interlobular ducts. Excretory ducts (large light colored with stratified columnar) Parotid gland intralobular ducts
  2. Background There has been an increase in the exposure to the radiofrequency radiation (RFR) emitted by wireless devices. RFR has many side effects, especially at young age. The parotid gland is one of the tissues exposed to high levels of RFR.. Aim The aim of this study was to investigate morphological changes in the parotid gland of rats following prenatal and postnatal exposure to RFR
  3. The parotid will be seen wrapping around the angle of mandible up to the tragus of the ear. An extension of the gland or accessory parotid lies medially on the cheek and is the landmark for the parotid duct. An accessory parotid gland can sometimes be seen just medial to the main parotid gland. This is the scan plane to visualise it
  4. or salivary glands with the parotid gland being the most common, approximately 40%. Only 1% of all salivary gland neoplasms are myoepitheliomas. Myoepithelioma is usually a benign tumor arising from neoplastic myoepithelial or basket cells which are found between the basement membrane and the basal.
  5. or salivary gland tumors. The frequency of malignant lesions varies by site
  6. Parotid gland. The parotid gland is the largest of the salivary glands. It is located in a compartment anterior to the ear and is invested by fascia that suspends the gland from the zygomatic arch. The parotid compartment contains the parotid gland, nerves, blood vessels, and lymphatic vessels, along with the gland itself
  7. Parotid gland - histology slide This is a histology slide of the parotid. The parotid is a serous gland. Its glands are arranged in lobules. They are composed of eosinophilic columnar cells with basal nuclei. Histology image descriptions and photography by Frank N. Miller, M.D.; histology image courtesy of Uniformed Services University of the.
Path of salivary glands and esophagus at Wake Forest

Parotid Gland Cancer . When tumors in the parotid gland are cancerous, they require removal and often additional treatment, as well. The close relationship of the parotid glands to the lymph system means cancer can spread easily from this location, so radiation and chemotherapy may be required if a tumor is cancerous.  A microspecimen of parotid gland presents secretory acines with serous cells that synthesize mostly enzymes. According to the chemical composition classification, the parotid gland relates to the following glands The parotid glands are one of the three major types of salivary glands in the body, and they're probably most recognized by those who remember the chipmunk cheeks of the mumps from back before the vaccine was available. The glands sit low on each side of your face and secrete saliva During the process of regeneration, secretomotor fibers of auriculotemporal nerve may join the great auricular nerve and supply the sweat glands of the skin covering parotid gland, therefore, when the person eats food , beads os perspiration appear on the skin over parotid gland because the stimulus intended for salivation produces sweat instead Pleomorphic adenoma, Parotid gland (5647) Pleomorphic adenoma of Parotid gland (3353) Branchial cleft cyst, Parotid gland (8795) Pleomorphic adenoma, Parotid gland (5650) Cysts of the Parotid gland are not uncommon. They account for 2 to 5 % of all Parotid gland lesions... A patient with a left surgical scar from Parotid gland adenoma surgery. The facial nerve is termed..

Video: Glands histology

Parotid glands are the largest among all other salivary glands and contribute about 75% of the total salivary secretion in the mouth. The saliva is transported with the help of parotid salivary duct called the Stensen's duct. In some individuals, accessory parotid glands may also be present around the main gland structure.. The parotid papilla is a small elevation of tissue that marks the opening of the parotid duct on the inner surface of the cheek (Illustrated Dental Embryology, Histology, and Anatomy, Bath-Balogh and Fehrenbach, Elsevier, 2006, p. 166). Serous fluid (as opposed to mucous fluid) is produced by the parotid gland. Innervatio Malignant melanoma of the parotid gland is often metastatic and mainly originates from malignant melanomas in the head and neck. Nevertheless, some malignant melanomas may metastasize and subsequently regress. Therefore, it may not be possible to observe a metastatic malignant melanoma and its primary melanoma simultaneously. The investigation of a patient's old photographs may help in. Among all human organs, salivary glands offer the largest variety of different histologic types and subtypes of primary neoplasms, most of them arising in the parotid glands. 1 Therefore, the management of tumors of the salivary glands requires a detailed understanding of the anatomy and pathologic processes affecting these glands. 2,3 Most important for choosing the appropriate surgical.

The Parotid Gland - Position - Vasculature - Innervation

This is a case report of such an asymptomatic unilateral parotid gland lesion in a 30-year-old female patient. The authors discuss the significance of clinical, radiographic, macro and microscopic. Histology. The parotid gland is a tubulo-acinar gland. It has a basophilic endoplasmic reticulum and a stratified squamous epithelium. It consists of acinar cells surrounded by myoepithelial cells and basement membrane. Species Differences Carnivores. The duct runs across the masseter muscle in carnivores and is superficial in the dog This is an online quiz called parotid gland histology There is a printable worksheet available for download here so you can take the quiz with pen and paper. Search Help in Finding parotid gland histology - Online Quiz Versio THE PAROTID GLAND • Para=around otic (ear) • Irregular, yellowish, lobulated • weight =25 gm. • Location: Antero-inferior to external acoustic meatus, between ramus of mandible and the sternomastoid and mastoid process. Apex posterior to angle of mandible. Base related to zygomatic arch. External featur

Blue Histology - Epithelia and Glands

  1. The parotid gland is a major salivary gland in humans. It is a bilateral structure, and the largest of the salivary glands. It is wrapped around the mandibular ramus, and secretes saliva through Stensen duct (or parotid duct) into the oral cavity, to facilitate mastication and swallowing and to begin the digestion of starches. The word 'parotid' (paraotic) literally means around the ear
  2. Parotid Salivary Gland, 40X There are nine images on this page--three magnifications each of the three types of salivary glands (parotid, submandibular, and sublingual. The first thing you have to know about the salivary glands is the difference between serous cells and mucous cells
  3. The salivary glands make saliva and release it into the mouth. There are three pairs of relatively large, major salivary glands: Parotid glands. Located in the upper part of each cheek, close to the ear. The duct of each parotid gland empties onto the inside of the cheek, near the molars of the upper jaw. Submandibular glands. Under the jaw
  4. A semithin section of the rat parotid gland showing lobules separated by connective tissue septa (CT) containing blood capillaries (C). The lobule contains serous acini (S) and the duct system; the acini are composed of pyramidal cells enclosing a central small lumen. The cytoplasm of the serous cells (white arrows) is filled with serous granules of variable densities
  5. Salivary gland tumors are growths of abnormal cells (tumors) that begin in the salivary glands. Salivary gland tumors are rare. Salivary glands make saliva, which aids in digestion, keeps your mouth moist and supports healthy teeth. You have three pairs of major salivary glands under and behind your jaw — parotid, sublingual and submandibular

Parotid Gland - Definition, Function and Location

The parotid, submandibular, and sublingual glands are the largest salivary glands.These glands may swell repeatedly and often bilaterally (sialadenosis), but are also subject to acute inflammation that is predominantly unilateral (sialadenitis).Diseases that commonly cause sialadenitis include: Sjögren syndrome (chronic immunologic sialadenitis), Heerfordt syndrome, and mumps (epidemic. Approximately 20% to 25% of parotid tumors, 35% to 40% of submandibular tumors, 50% of palate tumors, and 95% to 100% of sublingual gland tumors are malignant. For basic information about parotid gland cancer go here. For stages go here. For a discussion of the different types of parotid cancer see histology types. The most current treatment. in the parotid gland than in the submandibular gland. In all sites there was a striking predominance of pleomorphic adenoma, which altogether comprised Differences in histology may provide an ex- planation of differences in incidence between various types of tumor in various locations Parotid glands of adult pigs were studied by light and electron microscopy. The parenchyma consists of acini, intercalated ducts, striated ducts, and excretory ducts. Acini had little affinity for periodic acid‐Schiff and were alcian blue‐negative at pH 2.6 or 0.5

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Histology. BIOL523; Spring 2018; Connor . Histo-Tips: Image Gallery; You are here. Home. Parotid Gland, 4X . Submitted by mmwhelan on Tue, 01/30/2018 - 14:04. Parotid gland using 4X objective. Lab: Wow! Look at this! Previous Semesters. Best of Histology; Image Gallery Spring 2017; Image Gallery Fall 2015; Image Gallery Spring 2015; Image. also changes in the histological structure of the parotid salivary gland. Keywords: Methimazole, parotid gland, hypothyroidism, histology, rat INTRODUCTION Hypothyroidism is one of the common thyroid disorders in humans in which production of the thyroid hormones decreases below the normal level1; it can occur as a congenital or an acquired.

Malignant melanoma of the conjunctiva metastasising to the

Parotid gland definition is - a serous salivary gland situated on each side of the face below and in front of the ear the histology of the parotid glands of three species of mammals with the human one. MATERIAL AND METHOD Samples of the parotid gland from adult male specimens were used: Sprague Dawley rats (Rattus norvegicus) (n=5), mice ( Mus musculus ) (n=5) and rabbits (Oryctolagus cuniculus ) (n=5), which were euthanized with an overdose of ketamine/xylazine Salivary gland cysts or sialoceles can occur without any identifiable cause but usually are a complication of surgical or physical trauma to the major salivary glands (parotid, submandibular, or sublingual glands). These glandular structures are associated with a network of ductal systems that allow saliva to flow from the glands to the oral.

Atypical Fibroxanthoma With Regional Lymph Node MetastasisWebpathologyBIO 181-007 Study Guide (2012-13 Murdock) - Instructor

Parotid gland: | | | |Parotid gland| | | | | World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive. Parotid gland is the salivary glands are paired, numbered 2. Parotid gland is the largest of the salivary glands. Each weighing an average of 25 grams and irregular shape, berlobus, color between green and yellow (Yellowish) located below the external acoustic meatus between the mandible and the muscles sternokleidomastoideus. The accessory parotid gland drains into the main parotid duct by one tributary. Accessory parotid tissue is separated from the main gland by an average of 6 mm and is usually 3 cm or less in size. Histologically, accessory parotid tissue is distinctive, because mucinous cells as well as serous cells may be present in the acini Parotitis Lymph Node-Reactive lymphnodes (embedded in the Parotid gland) are secondary to parotitis. Parotid Cyst-Simple cysts may occur in either the Parotid or Submandibular glands. Parotid Complex Cyst-Cysts may become complex. Focal mural thickenings warrant further investigation The parotid gland is the largest of the sailvary glands lying on either side of the face, towards the back of the jaw and slightly below and in front of the ears. These two glands produce and secrete saliva along with the other salivary glands in the mouth. Like any organ, the parotid gland can become afflicted with a range of diseases and.


SUMMARY: Parotid gland oncocytoma is an uncommon, benign salivary neoplasm composed of mitochondria-rich oncocytes. The purpose of this study was to correlate MR imaging and histopathology of parotid gland oncocytomas and to define the features that may distinguish these neoplasms from other benign and malignant parotid gland tumors. The MR imaging features in 9 patients with a pathologic. Abstract The parotid salivar y gland microscopic morphology of the adult African Palm squirrel (Epixerus ebii) was investigated. This study was carried out to provide the basic histology of this.

Medical Pictures Info – Epidermoid CystANAT2241 Connective Tissue Components - Embryology

Parotid gland The parotid gland is a major salivary gland in many animals. In humans, the two parotid glands are present on either side of the mouth and in front of both ears. They are the largest of the salivary glands. Each parotid is wrapped around the mandibular ramus, and secretes serous saliva through the parotid duct into the mouth, to facilitate mastication and swallowing and to begin. The parotid gland secretions in resting conditions account for only about 25% of the saliva produced. During maximum stimulation (eating steak), the parotid glands secrete about twice the amount secreted by the submandibular glands. At rest the parotid secretes about 1/3rd the amount of the submandibular gland The parotid glands may be incidentally involved in numerous systemic conditions such as uremia and kwashiorkor. Diseases such as Wegener granuloma or Kimura disease involve the parotid glands as. Parotid gland contains vertically disposed blood vessels and horizontally situated facial nerve and its various branches. F.N supplies muscles of the face,scalp,auricle,gives secretomotor branches to the submandibular,sublingual,lacrimal,nasal,palatal, and pharyngeal glands.Even the taste from the most of the anterior two-thirds of tongue is. The parotid is the largest of the salivary glands and is pyramidal in shape (Fig. 7.25).Its base faces laterally between the anterior border of sternocleidomastoid and the ramus of the mandible, while its apex lies deeply against the styloid process

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