Head and neck

Question 1

What nerve innervates the muscle of mastication?

Answer 1

trigeminal v3- mandibular

Question 2

What are the 4 muscles of mastication?

Answer 2

temporalis
masseter
medial pterygoid
lateral pterygoid

Question 3

Where do the muscles of mastication insert?

Answer 3

mandible
temporalis; coronoid process, underneath the zygomatic bone
masseter: zygomaticus to ramus of mandible
lateral pterygoid: sphenoid to condylar process
medial pterygoid: sphenoid to mandibular angle

Question 4

What are the functions of the muscles?

Answer 4

temporalis: elevation and retraction of the mandible
masseter: elevates the mandible
medial pterygoid: elevation and protrusion of mandible