Accessory Muscles Of The TMJ

Question 1

Digastric anterior (origin)

Answer 1

Digastric fossa of mandible

Question 2

Digastric anterior (insertion)

Answer 2

Hyoid

Question 3

Digastric Anterior (action)

Answer 3

Steadies hyoid bone

Question 4

Digastric Anterior (innervation)

Answer 4

Mandibular branch of CN V

Question 5

Digastric Posterior (origin)

Answer 5

Mastoid notch of temporal bone

Question 6

Digastric Posterior (insertion)

Answer 6

Hyoid

Question 7

Digastric Posterior (action)

Answer 7

Steadies hyoid bone

Question 8

Digastric Posterior (innervation)

Answer 8

Facial nerve (through mastoid foremen)

Question 9

Suprahyoid (origin)

Answer 9

Medial surface of mandible, inferior mental spines

Question 10

Suprahyoid (insertion)

Answer 10

Superior surface of hyoid

Question 11

Suprahyoid (action)

Answer 11

Depress mandible when hyoid is fixed

Question 12

Suprahyoid (innervation)

Answer 12

Mandibular branch of CN V, CN I

Question 13

Infrahyoid (origin)

Answer 13

Sternum, superior boarder of scapula, thyroid cartilage

Question 14

Infrahyoid (insertion)

Answer 14

Inferior surface of hyoid and thyroid cartilage

Question 15

Infrahyoid (action)

Answer 15

Depression/fixation of hyoid

Question 16

Infrahyoid (innervation)

Answer 16

C1-3, CN I