Changes

*The cheeks are composed of muscles for [[mastication]]:  

*The cheeks are composed of muscles for [[mastication]]:  

    -The buccinator muscle  

**The buccinator muscle  

    -The masseter muscle

**The masseter muscle

    -Lateral and medial pterygoids

**Lateral and medial pterygoids

    -Digastricus muscle

**Digastricus muscle

    -Zygomaticus muscle

**Zygomaticus muscle

    -Temporalis muscle

**Temporalis muscle

    -Platysma muscle

**Platysma muscle

*[[Parotid|Parotid duct]] ends in a small papillae opposite the upper fourth premolar (canid)

*[[Parotid|Parotid duct]] ends in a small papillae opposite the upper fourth premolar (canid)

===Ruminants===

===Ruminants===

*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.

*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.