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| + | <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> |
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| − | 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.
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| − | ==Structure and Function==
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| − | The cheeks are composed of many of the muscles of [[mastication]].
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| − | The main muscles of [[mastication]] are:
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| − | *The '''masseter''' muscle
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| − | *The '''lateral''' and '''medial''' pterygoids
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| − | *The '''digastricus''' muscle
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| − | *The '''temporalis''' muscle
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| − | Other muscles that aid mastication include :
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| − | *the buccinator muscle
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| − | *the zygomaticus muscle
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| − | *the platysma muscle
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| − | The '''[[Parotid Gland - Anatomy & Physiology|Parotid duct]]''' opens in a small papillae above the upper fourth premolar (canid).
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| − | ==Innervation==
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| − | The cheeks are innervated by the trigeminal nerve ([[Cranial Nerves - Anatomy & Physiology|CN V]]) and the facial nerve ([[Cranial Nerves - Anatomy & Physiology|CN VII]]).
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| − | ==Histology==
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| − | *Non keratinised stratified epithelium
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| − | *Some keratinisation in ruminants (see [[Cheeks#Species Differences|species difference section]] )
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| − | *[[Buccal Gland - Anatomy & Physiology|Buccal]] glands
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| − | *[[Zygomatic Gland - Anatomy & Physiology|Zygomatic]] salivary gland
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| − | ==Species Differences==
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| − | ===Rodents===
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| − | '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. | |
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| − | ===Ruminants===
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| − | '''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.
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| − | {{Learning
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| − | |flashcards = [[Cheeks Anatomy & Physiology Flashcards]]<br>[[Facial_Muscles_-_Musculoskeletal_-_Flashcards|Facial Muscles Flashcards]]
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| − | |Vetstream = [https://www.vetstream.com/canis/Content/Disease/dis02133.asp Masticatory Myopthies]
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| − | }}
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| − | {{review}}
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| − | {{OpenPages}}
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| − | [[Category:Oral Cavity - Anatomy & Physiology]]
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| − | [[Category:Musculoskeletal System - Anatomy & Physiology]]
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