Protrusion of the Jaw

Question 1

Lateral pterygoid superior head
(origin)

Answer 1

greater wing of sphenoid

Question 2

Lateral pterygoid superior head
(insertion)

Answer 2

Temporomandibular joint (TMJ) capsule & disc

Question 3

Lateral pterygoid superior head
(action)

Answer 3

retrusion (stabilizes disc)

Question 4

Lateral pterygoid superior head
(innervation)

Answer 4

Mandibular branch of CN V

Question 5

Lateral pterygoid Inferior head
(origin)

Answer 5

Lateral surface of lateral pterygoid plate

Question 6

Lateral pterygoid Inferior head
(insertion)

Answer 6

Mandibular neck, just inferior to condyle

Question 7

Lateral pterygoid Inferior head
(action)

Answer 7

protrusion

Question 8

Lateral pterygoid Inferior head
(innervation)

Answer 8

Mandibular branch of CN V