Carnial Nerves 11 & 12 (XI & XII)

Question 1

mediates head and shoulder movement

Answer 1

Accessory nerve

Question 2

Accessory nerve is a motor nerve that is formed by the union of

Answer 2

cranial and spinal roots

Question 3

The cranial root is formed from the

Answer 3

axons of nerve cells of the nucleus ambiguus

Question 4

The nucleus ambiguus receives corticonuclear fibers from both

Answer 4

cerebral hemispheres

Question 5

Efferent fibers of the nucleus emerge from _________ between the

Answer 5

Anterior surface of the medulla oblongata
olive and the inferior cerebellar peduncle

Question 6

Cranial root runs laterally in the

Answer 6

Posterior cranial fossa and joins the spinal root

Question 7

Cranial root joins the vagus nerve and is distributed in its pharyngeal and recurrent laryngeal branches

Answer 7

muscles of soft palate, pharynx and larynx

Question 8

The spinal root is formed from

Answer 8

axons of nerve cells in the spinal nucleus

Question 9

Spinal nucleus is situated in the

Answer 9

anterior gray column of the spinal cord (in the upper 5 cervical segments)

Question 10

After a short distance the spinal root separates from the

Answer 10

Cranial root

Question 11

Accessory nerve runs downward and laterally and enters the deep surface of the

Answer 11

sternocleidomastoid muscle and supplies it

Question 12

Accessory nerve crosses the posterior triangle of the neck and passes beneath the

Answer 12

trapezius muscle and supplies it

Question 13

Accessory nerve brings movement of the

Answer 13

Soft plate
Pharynx
Larynx

Question 14

Accessory nerve controls the movements of

Answer 14

Two large muscles in the neck

Question 15

Hypoglossal supplies all the

Answer 15

intrinsic muscles of the tongue
styloglossus
hyoglossus and the genioglossus muscles

Question 16

Hypoglossal nucleus is situated close to the

Answer 16

midline beneath lower part of the fourth ventricle

Question 17

Hypoglossal nerve receives corticonuclear fibers from both

Answer 17

Cerebral hemisphere

Question 18

The hypoglossal nerve fibers pass anteriorly
through the

Answer 18

medulla oblongata and emerge as a series of roots in the groove between pyramid and the olive

Question 19

The hypoglossal nerve fibers emerge on the
anterior surface of

Answer 19

medulla oblongata between the pyramid and the olive

Question 20

hypoglossal nerve crosses the

Answer 20

posterior cranial fossa and leaves the skull through hypoglossal canal

Question 21

Hypoglossal nerve passes downward and forward in the neck between the

Answer 21

internal carotid artery
internal jugular vein

Question 22

Hypoglossal nerve passes deep to the posterior margin of the

Answer 22

mylohyoid muscle

Question 23

Hypoglossal nerve then sends branches to the

Answer 23

Muscles of the tongue

Question 24

the hypoglossal nerve controls the

Answer 24

movements and shape of the tongue

Question 25

the hypoglossal nerve In the upper part of its course, the hypoglossal nerve is joined by C1 fibers from

Answer 25

the cervical plexus