Muscles

Question 1

Temporalis origin

Answer 1

Temporal fossa and inferior temporal line

Question 2

Temporalis insertion

Answer 2

Coronoid process mandible

Question 3

Temporalis nerve supply

Answer 3

Anterior division Mandibular nerve

Question 4

Temporalis action

Answer 4

1. Elevation
2. Retraction mandible

Question 5

Sternomastoid origin

Answer 5

Medial 1/3 clavicle (Clavicular head) and manubrium sterni front (sternal head)

Question 6

Sternomastoid insertion

Answer 6

Lateral surface mastoid process and superior nuchal line

Question 7

Sternomastoid nerve supply

Answer 7

Spinal root accessory, C2 and 3

Question 8

Sternomastoid action

Answer 8

1. Bend head same side
2. Rotates face opposite side (one)
3. Neck flexion (both)

Question 9

Masseter origin

Answer 9

Zygomatic arch

Question 10

Masseter insertion

Answer 10

Outer surface of mandible ramus

Question 11

Masseter nerve supply

Answer 11

Anterior division Mandibular nerve

Question 12

Masseter action

Answer 12

1. Elevation
2. Protraction

Question 13

Digastric origin

Answer 13

Digastric fossa mandible (anterior belly) and digastric notch mastoid (posterior belly)

Question 14

Digastric insertion

Answer 14

Intermediate tendon

Question 15

Digastric nerve supply

Answer 15

Nerve to mylohyoid (anterior belly) and facial nerve (posterior belly)

Question 16

Digastric action

Answer 16

Hyoid elevation or mandible depression