Difference between revisions of "Mandibular Gland - Anatomy & Physiology"

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{{toplink
 
|backcolour =BCED91
 
|linkpage =Alimentary - Anatomy & Physiology
 
|linktext =Alimentary System
 
|maplink =
 
|sublink1=Oral Cavity - Salivary Glands - Anatomy & Physiology#Major Salivary Glands
 
|subtext1=MAJOR SALIVARY GLANDS
 
}}
 
<br>
 
==Mandibular Salivary Gland==
 
[[Image:Parotid & Mandibular Salivary Gland.jpg|thumb|right|150px|Mandibular Salivary Gland - Copyright Nottingham 2008]]
 
*Mixed gland - [[Serous Salivary Gland - Anatomy and Physiology|serous]] and [[Mucous Salivary Gland - Anatomy & Physiology|mucous]] secretion
 
 
*Merocrine secretion
 
 
*Generally smaller than the [[Parotid Gland - Anatomy & Physiology|parotid]] gland
 
 
*It is a moderately large gland in carnivores
 
 
*It is a large gland in herbivores
 
 
*Compact
 
 
*Located around angle of jaw
 
  
*Mandibular duct runs ventral to mucous membrane of floor of [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]], close to frenulum of [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]]
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==Overview==
 +
[[File:Salivary glands.jpg|500px|right|thumb|Dog salivary glands]]
 +
The '''mandibular gland''' produces a '''merocrine''' secretion, which means it is a mixed gland - [[Serous Salivary Gland - Anatomy & Physiology|serous]] and [[Mucous Salivary Gland - Anatomy & Physiology|mucous]] secretions.
 +
It is generally smaller than the '''[[Parotid Gland - Anatomy & Physiology|parotid]]''' gland and is a moderately large gland in carnivores and herbivores. It is compact and located around the angle of the jaw.
  
*Duct opens at sublingual caruncle
+
The '''mandibular duct''' runs ventral to the mucous membrane of the floor of the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]], close to the '''frenulum''' of the [[Tongue - Anatomy & Physiology|tongue]]. The duct opens at  the '''sublingual caruncle'''.
 
 
*Innervated by facial nerve ([[Cranial Nerves - Anatomy & Physiology|CN VII]]) via chordi tympanii of trigeminal ([[Cranial Nerves - Anatomy & Physiology|CN V]])
 
  
 
==Histology==
 
==Histology==
  
*Tubulo-acinar gland
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The mandibular gland is known as a '''tubulo-acinar gland'''. It consists of [[Mucous Salivary Gland - Anatomy & Physiology|mucous]] cells that stain lighter and [[Serous Salivary Gland - Anatomy & Physiology|serous]] demilunes that stain darker. '''Demilunes''' secrete into lumen by canaliculi between mucous cells.
  
*[[Mucous Salivary Gland - Anatomy & Physiology|Mucous]] cells (stain lighter)
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==Innervation==
 
 
*[[Serous Salivary Gland - Anatomy and Physiology|Serous]] demilunes (stain darker)
 
 
 
*Demilunes secrete into lumen by canaliculi between mucous cells
 
  
 +
The mandibular gland is innervated by the '''facial''' nerve ([[Cranial Nerves - Anatomy & Physiology|CN VII]]) via the '''chordi tympanii''' and by  the '''trigeminal''' nerve ([[Cranial Nerves - Anatomy & Physiology|CN V]]).
  
 
==Species Differences==
 
==Species Differences==
  
'''Carnivores'''
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===Carnivores===
*Mainly [[Mucous Salivary Gland - Anatomy & Physiology|mucous]] secretion in dog and cat
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The mandibular gland produces mainly [[Mucous Salivary Gland - Anatomy & Physiology|mucous]] secretions in the dog and cat. It is an oval shape in the canid.
 
 
*Oval shape in canid
 
 
 
'''Herbivores'''
 
*Larger and deeper
 
 
 
==Test yourself with the salivary gland flashcards==
 
 
 
[[Oral_Cavity_-_Anatomy_%26_Physiology_-_Flashcards#Salivary_Glands_Flashcards|Salivary Gland Flashcards]]
 
  
 +
===Herbivores===
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The mandibular gland in herbivores is larger and deeper.
  
 +
{{Template:Learning
 +
|flashcards = [[Salivary Gland Anatomy & Physiology Flashcards]]
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|powerpoints = [[Oral Cavity Histology resource|Oral cavity histology tutorial, which looks at salivary glands]]
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|Vetstream = [https://www.vetstream.com/canis/search?s=salivary Salivary Gland Diseases]
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}}
  
[[Category:Alimentary System - Anatomy & Physiology]]
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==Webinars==
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<rss max="10" highlight="none">https://www.thewebinarvet.com/gastroenterology-and-nutrition/webinars/feed</rss>
 +
[[Category:Salivary Glands - Anatomy & Physiology]]
 +
[[Category:A&P Done]]
 +
[[Category:David_Hogg_reviewing]]

Latest revision as of 15:17, 4 January 2023

Overview

Dog salivary glands

The mandibular gland produces a merocrine secretion, which means it is a mixed gland - serous and mucous secretions. It is generally smaller than the parotid gland and is a moderately large gland in carnivores and herbivores. It is compact and located around the angle of the jaw.

The mandibular duct runs ventral to the mucous membrane of the floor of the oral cavity, close to the frenulum of the tongue. The duct opens at the sublingual caruncle.

Histology

The mandibular gland is known as a tubulo-acinar gland. It consists of mucous cells that stain lighter and serous demilunes that stain darker. Demilunes secrete into lumen by canaliculi between mucous cells.

Innervation

The mandibular gland is innervated by the facial nerve (CN VII) via the chordi tympanii and by the trigeminal nerve (CN V).

Species Differences

Carnivores

The mandibular gland produces mainly mucous secretions in the dog and cat. It is an oval shape in the canid.

Herbivores

The mandibular gland in herbivores is larger and deeper.


Mandibular Gland - Anatomy & Physiology Learning Resources
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Vetstream
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Canis, Felis, Lapis or Equis
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Flashcards
Test your knowledge using flashcard type questions
Salivary Gland Anatomy & Physiology Flashcards
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PowerPoint
Selection of relevant PowerPoint tutorials
Oral cavity histology tutorial, which looks at salivary glands


Webinars

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