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The muscles of mastication are well developed.
The muscles of mastication are well developed.
'''Jaw Opening Muscles'''
*Digastricus muscle
-Origin: paracondylar process of occipital bone
-Insertion: angle of mandible
-Two bellies: caudal half from the second visceral arch innervated by facial nerve (CV VII)
cranial half from the first visceral arch innervated by the mandibular branch of the trigeminal (CV V3)
-Herbiverous species have a limited digastricus muscle
-Canids have a larger digasticus muscle (but smaller in comparison with jaw closing muscles)