larynx innervations

Question 1

laryngeal neural control of intrinsic muscles: motor

Answer 1

CN X (vagus)
-2 branches: recurrent laryngeal nerve (RLN) and superior laryngeal nerve (SLN)

Question 2

laryngeal neural control of extrinsic muscles: motor

Answer 2

cervical spinal nerves C1, C2, C3 and CN X (vagus)

Question 3

innervation of thyroarytenoid, posterior cricoarytenoid, lateral cricoarytenoid, transverse arytenoid, oblique arytenoid

Answer 3

RLN (recurrent laryngeal nerve) of CN X

Question 4

innervation of cricothyroid (CT)

Answer 4

superior laryngeal nerve (SLN of CN X)

Question 5

innervation of sternothyroid

Answer 5

C1, C2, C3

Question 6

innervation of thyrohyoid

Answer 6

C1 & C2

Question 7

innervation of the inferior pharyngeal constrictor

Answer 7

RLN of CN X

Question 8

innervation of sternohyoid

Answer 8

C1, C2, C3

Question 9

innervation of omohyoid

Answer 9

C1, C2, C3

Question 10

innervation of digastricus anterior

Answer 10

mandibular branch of CN V (trigeminal)

Question 11

innervation of stylohyoid

Answer 11

CN VII (facial)

Question 12

innervation of mylohyoid

Answer 12

mandibular branch of CN V (trigeminal)

Question 13

innervation of geniohyoid

Answer 13

C1

Question 14

innervation of the genioglossus

Answer 14

CN XII (hypoglossal)

Question 15

innervation of hyoglossus

Answer 15

CN XII (hypoglossal)

Question 16

what does CN XII innervate

Answer 16

genioglossus, hyoglossus

Question 17

what does mandibular branch of CN V (trigeminal) innervate

Answer 17

mylohyoid, digastricus anterior

Question 18

what muscles are innervated by C1, C2, & C3

Answer 18

omohyoid, sternohyoid, sternothyroid