Inferior Head of Lateral Pterygoid
Jaw & Mouth
The key player in opening your mouth — and in TMJ problems.
Function
Protrudes mandible, opens mouth, side-to-side movement
Origin
Lateral surface of lateral pterygoid plate
Insertion
Neck of mandibular condyle, TMJ articular disc
Innervation
Lateral pterygoid nerve from mandibular nerve (CN V3)