Exam 2 CN XII Hypoglossal

Question 1

Name the type of neurons in the nucleus of the hypoglossal n

Answer 1

Multipolar

Question 2

The apparent origin of the hypoglossal nerve is between what two structures?

Answer 2

Pyramid and olive

Question 3

The hypoglossal n exits the cranial cavity through this

Answer 3

Hypoglossal canal

Question 4

Name the related muscle where the hypoglossal n becomes superficial

Answer 4

Posterior belly of digastric

Question 5

Name the intrinsic muscles of the tongue which are innervated by the hypoglossal nerve

Answer 5

Upper and lower longitudinal, vertical, and transverse muscles

Question 6

Name the branch of hypoglossal nerve which connects to the pharyngeal plexus on the occipital artery

Answer 6

Ramus lingularis vagi

Question 7

Near the anterior border of the hyoglossus, the hypoglossal n communicates with what nerve?

Answer 7

Lingual n of mandibular

Question 8

The meningeal n of the hypoglossal n consists of what type of nerve fibers

Answer 8

Sensory and sympathetic

Question 9

The upper root of the ansa cervicalis is the branch of what?

Answer 9

Descending branch of hypoglossal n

Question 10

Name 2 muscles which are innervated by the c1 component of the descending branch of hypoglossal n

Answer 10

Thyrohyoid

Geniohyoid

Question 11

Name the nerve of the hypoglossal n which is derived from the upper cervical nerves for sensory and from the superior cervical sympathetic ganglion

Answer 11

Meningeal n of hypoglossal

Question 12

Name the branch of the hypoglossal n which constitutes the upper root of the ansa cervicalis

Answer 12

Descending branch

Question 13

Name the muscles which are innervated by the ansa cervicalis

Answer 13

Superior belly of omohyoid
Inferior belly of omohyoid
Sternohyoid
Sternothyroid

Question 14

Name the cervical nerves which form the ansa cervicalis

Answer 14

1st, 2nd, and 3rd

Question 15

The unilateral lingual paralysis can cause this

Answer 15

Hemiatrophy of tongue