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==Overview==
==Overview==
The cheeks are composed of many of the muscles of [[mastication]].
The cheeks are composed of many of the muscles of [[mastication]].
The main muscles of [[mastication]] are
The main muscles of [[mastication]] are:
*The '''masseter''' muscle
*The '''lateral''' and '''medial''' pterygoids
*The '''digastricus''' muscle
*The '''temporalis''' muscle
Other muscles that aid mastication include :
*the buccinator muscle
*the zygomaticus muscle
*the platysma muscle
The '''[[Parotid Gland - Anatomy & Physiology|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).
==Innervation==
==Innervation==
The cheeks are innervated by the trigeminal nerve ([[Cranial Nerves - Anatomy & Physiology|CN V]]) and the facial nerve ([[Cranial Nerves - Anatomy & Physiology|CN VII]]).
The cheeks are innervated by the trigeminal nerve ([[Cranial Nerves - Anatomy & Physiology|CN V]]) and the facial nerve ([[Cranial Nerves - Anatomy & Physiology|CN VII]]).
==Histology==
*Non keratinised stratified epithelium
*Some keratinisation in ruminants (see [[Cheeks#Species Differences|species difference section]] )
*[[Buccal Gland - Anatomy & Physiology|Buccal]] glands
*[[Zygomatic Gland - Anatomy & Physiology|Zygomatic]] salivary gland
==Species Differences==
==Species Differences==
'''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.
'''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]
}}
[[Category:Oral Cavity - Anatomy & Physiology]][[Category:Musculoskeletal System]]
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[[Category:Oral Cavity - Anatomy & Physiology]]
[[Category:Musculoskeletal System - Anatomy & Physiology]]