Changes

**Insertion: angle of [[Skull and Facial Muscles - Anatomy & Physiology#Mandible (mandibula)|mandible]]

**Insertion: angle of [[Skull and Facial Muscles - Anatomy & Physiology#Mandible (mandibula)|mandible]]

**Two bellies:  

**Two bellies:  

***Caudal half from the second visceral arch innervated by facial nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN VII]])

***Caudal half from the second visceral arch innervated by facial nerve ([[Cranial Nerves - Anatomy & Physiology|CN VII]])

***Cranial half from the first visceral arch innervated by the mandibular branch of the trigeminal ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN V3]])

***Cranial half from the first visceral arch innervated by the mandibular branch of the trigeminal ([[Cranial Nerves - Anatomy & Physiology|CN V3]])

      

      

===Jaw Closing Muscles===

===Jaw Closing Muscles===

All jaw closing muscles are derived from the first visceral arch and are innervated by the mandibular branch of the trigeminal nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN V3]])

All jaw closing muscles are derived from the first visceral arch and are innervated by the mandibular branch of the trigeminal nerve ([[Cranial Nerves - Anatomy & Physiology|CN V3]])

*Masseter muscle

*Masseter muscle