Difference between revisions of "Cheeks"
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==Overview== | ==Overview== | ||
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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]]''' | + | 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== | ||
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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. | '''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 | + | {{review}} |
| − | + | {{OpenPages}} | |
| + | [[Category:Oral Cavity - Anatomy & Physiology]] | ||
| + | [[Category:Musculoskeletal System - Anatomy & Physiology]] | ||
Latest revision as of 09:50, 7 May 2016
Overview
The cheeks (buccae) are important in the process of mastication (and also drinking in herbivores). Minor Salivary glands are located within the buccal musculature. The cheeks also create extensive food storage pouches in some species.
Structure and Function
The cheeks are composed of many of the muscles of mastication.
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 duct opens in a small papillae above the upper fourth premolar (canid).
Innervation
The cheeks are innervated by the trigeminal nerve (CN V) and the facial nerve (CN VII).
Histology
- Non keratinised stratified epithelium
- Some keratinisation in ruminants (see species difference section )
- Buccal glands
- Zygomatic salivary gland
Species Differences
Rodents
'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.
| Cheeks Learning Resources | |
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Canis, Felis, Lapis or Equis |
 Test your knowledge using flashcard type questions |
Cheeks Anatomy & Physiology Flashcards Facial Muscles Flashcards |
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This article has been peer reviewed but is awaiting expert review. If you would like to help with this, please see more information about expert reviewing. |
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