Lateral Pterygoid

Question 1

Origin

Answer 1

Superior head:
Greater wing of the sphenoid
Inferior head:
Lateral surface of the lateral pterygoid plate of the pterygoid process of the sphenoid

Question 2

Insertion

Answer 2

Superior head:
Capsule and articular disc of TMJ
Inferior head:
Neck of the mandible

Question 3

Function

Answer 3

• Contralateral deviation the the mandible at TMJ
• Protraction of the mandible at TMJ

Question 4

Nerve

Answer 4

Mandibualr branch of the trigeminal nerve (cranial nerve 5)