Masseter Muscle: Anatomy, Origin, Insertion, Function

Discuss the origin, insertion, nerve supply and action of masseter muscle.
Answer.

Masseter Muscle Origin

Superficial part: From the anterior two-third of the lower border of zygomatic arch and adjoining part of zygomatic process of maxilla.

Deep part: From the inner surface of zygomatic arch.

Head And Neck Infratemporal fossa temporomandibular joint and pterygopalatine fossa Origin and insertion of masseter muscle

Masseter Muscle Insertion

Into the outer surface of the ramus of mandible.

Masseter Muscle Nerve supply

Masseteric nerve from the anterior division of the mandibular nerve.

Masseter Muscle Action

Elevation of mandible to close the mouth (as required during biting).

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