Difference between revisions of "Cheeks"

Revision as of 08:53, 2 July 2008

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Introduction

The cheeks (buccae) are important in the process of mastication (and also drinking in herbivores). Salivary glands are located within the buccal musculature.

The cheeks also create extensive food storage pouches in some species.

Functional Anatomy

The cheeks are composed of muscles for mastication:

   -The buccinator muscle 
   -The masseter muscle
   -Lateral and medial pterygoids
   -Digastricus muscle
   -Zygomaticus muscle
   -Platysma muscle

Parotid duct ends in a small papillae opposite the upper fourth premolar (canid)

Histology

Non keratinised stratified epithelium

Some keratinisation in ruminants (see species difference section)

Buccal glands

Zygomatic salivary gland

Innervation

Trigeminal nerve (CN V)

Facial nerve (CN VII)

Species Differences

'Cheek pouches' are diverticula found in monkeys and rodents allowing food storage. The pouches can be extensive extending into the thorax with their own musculature.

Papillae are present on the medial surface of the cheeks in ruminants. These large, pointed and densely spaced projections of keratin provide protection to the underlying epithelium due to the rough diet.

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-{{OpenPagesTop}}
+<big><center>[[Alimentary - Anatomy & Physiology|'''BACK TO ALIMENTARY - ANATOMY & PHYSIOLOGY''']]</center></big>
-==Overview==
+<big><center>[[Oral Cavity - Cavity - Anatomy & Physiology|'''BACK TO ORAL CAVITY - ANATOMY AND PHYSIOLOGY]]</center></big>
-The cheeks (buccae) are important in the process of [[Mastication|mastication]] (and also drinking in herbivores). Minor [[Salivary Glands - Anatomy & Physiology|Salivary glands]] are located within the buccal musculature. The cheeks also create extensive food storage pouches in some species.
+==Introduction==
-==Structure and Function==
+The cheeks (buccae) are important in the process of [[Mastication|mastication]] (and also drinking in herbivores). [[Oral Cavity - Salivary Glands - Anatomy & Physiology|Salivary glands]] are located within the buccal musculature.
-The cheeks are composed of many of the muscles of [[mastication]].
+The cheeks also create extensive food storage pouches in some species.
-The main muscles of [[mastication]] are:
+==Functional Anatomy==
-*The '''masseter''' muscle
-*The '''lateral''' and '''medial''' pterygoids
-*The '''digastricus''' muscle
-*The '''temporalis''' muscle
-Other muscles that aid mastication include :
+*The cheeks are composed of muscles for [[mastication]]:
-*the buccinator muscle
+    -The buccinator muscle
-*the zygomaticus muscle
+    -The masseter muscle
-*the platysma muscle
+    -Lateral and medial pterygoids
+    -Digastricus muscle
+    -Zygomaticus muscle
+    -Platysma muscle
+*Parotid duct ends in a small papillae opposite the upper fourth premolar (canid)
-The '''[[Parotid Gland - Anatomy & Physiology|Parotid duct]]''' opens in a small papillae above the upper fourth premolar (canid).
+==Histology==
-==Innervation==
+*Non keratinised stratified epithelium
-The cheeks are innervated by the trigeminal nerve ([[Cranial Nerves - Anatomy & Physiology|CN V]]) and the facial nerve ([[Cranial Nerves - Anatomy & Physiology|CN VII]]).
+*Some keratinisation in ruminants (see species difference section)
-==Histology==
+*Buccal glands
-*Non keratinised stratified epithelium
+*Zygomatic salivary gland
-*Some keratinisation in ruminants (see [[Cheeks#Species Differences|species difference section]] )
+==Innervation==
-*[[Buccal Gland - Anatomy & Physiology|Buccal]] glands
+*Trigeminal nerve (CN V)
-*[[Zygomatic Gland - Anatomy & Physiology|Zygomatic]] salivary gland
+*Facial nerve (CN VII)
 ==Species Differences==
-===Rodents===
+*'Cheek pouches' are diverticula found in monkeys and rodents allowing food storage. The pouches can be extensive extending into the thorax with their own musculature.
-'Cheek pouches' are '''diverticula''' found in rodents (and monkeys) allowing food storage. The pouches can be extensive extending into the thorax with their own musculature.
-===Ruminants===
-'''Papillae''' are present on the medial surface of the cheeks. These large, pointed and densely spaced projections of '''keratin''' provide protection to the underlying epithelium due to the rough diet.
-{{Learning
-|flashcards = [[Cheeks Anatomy & Physiology Flashcards]]<br>[[Facial_Muscles_-_Musculoskeletal_-_Flashcards|Facial Muscles Flashcards]]
-|Vetstream = [https://www.vetstream.com/canis/Content/Disease/dis02133.asp Masticatory Myopthies]
-}}
-{{review}}
+*Papillae are present on the medial surface of the cheeks in ruminants. These large, pointed and densely spaced projections of keratin provide protection to the underlying epithelium due to the rough diet.
-{{OpenPages}}
-[[Category:Oral Cavity - Anatomy & Physiology]]
-[[Category:Musculoskeletal System - Anatomy & Physiology]]