Head

Question 1

Lateral Pterygoid (Superior)

Answer 1

O: greater wing of sphenoid
I: TMJ capsule & disc
A: retrusion (stabalizes disc)
N: mandibular branch of CN V

Question 2

Suprahyoid

Answer 2

O: medial surface of mandible, inferior mental spines
I: sup surface of hyoid
A: depress mandible when hyoid is fixed
N: mandibular branch of CN V, CN I

Question 3

Infrahyoid

Answer 3

O: sternum, sup border scapula, thyroid cartilage
I: inferior surface of hyoid and thyroid cartilage
A: depression/fixation of hyoid
N: C1-3, CN I

Question 4

Temporalis

Answer 4

O: lateral skull
I: coronoid, medial surface of ramus
A: elevate mandible
N: mandibular branch CN V

Question 5

Masseter

Answer 5

O: zygomatic arch
I: lateral surface ramus and angle of mandible
A: elevate mandible
N: mandibular branch of CN V

Question 6

Medial Pterygoid

Answer 6

O: med surface of lat pterygoid plate
I: medial surface of ramus and angle
A: elevate mandible
N: mandibular branch of CN V

Question 7

Digastric (two muscle bellies running in tandem)

Answer 7

O: Ant - digastric fossa of mandible, Post - mastoid notch of temporal bone
I: hyoid
A: steadies hyoid bone
N: mandibular branch of CN V, Facial N.

Question 8

Lateral Pterygoid (Inferior)

Answer 8

O: lateral surface of lat pterygoid plate
I: mandibular neck, just inf to condyle
A: protrusion
N: mandibular branch of CN V