Changes

==Overview==

==Overview==

[[Image:Parotid & Mandibular Salivary Gland.jpg|thumb|right|250px|Parotid Salivary Gland - Copyright Nottingham 2008]]

[[File:Salivary glands.jpg|500px|thumb|right|Dog salivary glands]]

The parotid salivary gland produces a [[Serous Salivary Gland - Anatomy & Physiology|serous]] secretion. It is moulded around the base of the [[Ear - Anatomy & Physiology#Outer Ear|auricular cartilage]] of the ear. It is enclosed within facial covering.  

The parotid salivary gland produces a [[Serous Salivary Gland - Anatomy & Physiology|serous]] secretion. It is moulded around the base of the [[Ear - Anatomy & Physiology#Outer Ear|auricular cartilage]] of the ear. It is enclosed within facial covering.  

Trabeculae divide the gland into lobules. Major ducts run within trabeculae and merge to form a single duct. The duct opens in the vestibule opposite the 4th upper premolar (Not all species).  

Trabeculae divide the gland into lobules. Major ducts run within trabeculae and merge to form a single duct. The duct opens in the vestibule opposite the 4th upper premolar (not all species).  

The parotid gland is innervated by the '''glossopharyngeal nerve''' ([[Cranial Nerves - Anatomy & Physiology|CN IX]]) via the trigeminal branch. ([[Cranial Nerves - Anatomy & Physiology|CN V]])

The parotid gland is innervated by the '''glossopharyngeal nerve''' ([[Cranial Nerves - Anatomy & Physiology|CN IX]]) via the trigeminal branch.  

==Development==

==Development==

There is an intercalated duct and cuboidal cells. This becomes a striated duct, the cuboidal cells develop with mitochondria in the base. The duct develops into an interlobular duct. The cells become stratified columnar cells. The stratified squamous epithelium then becomes continuous with the epithelium lining of the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]].

Intercalated duct becomes a striated duct and cuboidal cells develop with mitochondria in the base. The duct develops into an interlobular duct. The cells become stratified columnar cells. The stratified squamous epithelium then becomes continuous with the epithelium lining of the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]].

 

 

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==

==Species Differences==

===Carnivores===

===Carnivores===

There is some mucous secretion in the cat and dog. The duct is superficial in the dog. The duct runs across masseter muscle in carnivores.

The duct runs across the masseter muscle in carnivores and is superficial in the dog. The gland produces some mucous secretion in the cat and dog.  

===Herbivores===

===Herbivores===

===Equine===

===Equine===

The gland overlies the [[Ear - Anatomy & Physiology#Equine Gutteral Pouch|gutteral pouch]].

The gland overlies the [[Ear - Anatomy & Physiology#Equine Gutteral Pouch|guttural pouch]].

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==Links==

 

|flashcards = [[Salivary Gland Anatomy & Physiology Flashcards]]

'''Test yourself with the [[Oral_Cavity_-_Anatomy_%26_Physiology_-_Flashcards#Salivary_Glands_Flashcards|Salivary Glands Flashcards]]'''

|videos = [http://stream2.rvc.ac.uk/Anatomy/canine/head_neck/Pot0258.mp4 Lateral section through the head of a dog]

 

'''Click here for information on[[Parotid Gland - Histology|histology]]'''

 

 

[http://stream2.rvc.ac.uk/Anatomy/canine/head_neck/Pot0258.mp4 Pot 258 Lateral section through the head of a dog]

[[Category:Salivary Glands - Anatomy & Physiology]]

[[Category:Salivary Glands - Anatomy & Physiology]]

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