Lateral Pterygoid Muscle - Attachments, Actions & Innervation
Medial Pterygoid Muscle – Attachments, Actions & Innervation
The medial pterygoid muscle is one of the four muscles of mastication. It is a powerful elevator of the mandible and is particularly active in chewing.
Attachments of Medial Pterygoid Muscle: Origin & Insertion
Insertion: (distal attachments):
Medial surface of ramus and angle of mandible.
Actions of Medial Pterygoid Muscle on the mandible:
a. Elevate mandible.
b. Protract (or protrude) mandible.
Individually: they move the mandible side to side.
Learn the facial muscles easily with these quizzes and labeled diagrams.
Nerve to Muscle and its Spinal Segment:
Mandibular branch of trigemminal nerve (V).
Muscles of Mastication