Muscles of Mastication Revision Questions

Question 1

Temporalis

Answer 1

elevates and retracts the mandible
inserts - into the cornoid process
origin - temporal fossa

Question 2

Masseter

Answer 2

elevates and protracts the mandible and assists in lateral movevements
inserts - ramus of madible
origin - superfically - maxiallry process of zygomatic bone, deep part - zygomatic arch of temporal bone

Question 3

lateral pterygoid

Answer 3

depresses mandible and protracts and causes lateral movements
inserts - into neck of mandible
origin - superior head - greater wing of sphenoid, inferior head - lateral pterygoid plate of sphenoid bone

Question 4

medial pterygoid

Answer 4

elevates and protracts mandible and assists in lateral movement
inserts - ramus of mandible near angle
origin - deep head - medial aspect of lateral pterygoid plate of sphenoid bone, superficial head - from maxiallary tuberosity and pyradmidal process of palatine bone