cranial nerves

Question 1

CN XII

Answer 1

GSE
hypoglossal nucleus in medulla
muscles of the tongue
afferent input from solitary nucleus, principal trigeminal and corticobulbar fibers

Question 2

CN XI

Answer 2

GSE
mediates head and shoulder movements- spinal accessory nucleus
innervates laryngeal muscle- nucleus ambiguus

Question 3

CN X

Answer 3

GSA, GVA, SVA, SVE, GVE
GSA: cell bodies in superior ganglion - innervates ear, ext auditory meatus, dura
GVA: reflex control of visceral functions
cell bodies in inferior ganglion
SVA: taste cell bodies in inferior ganglion
SVE: mm of pharynx, larynx, upper esophagus, fibers in nucleus ambiguus
GVE: parasympathetic, fibers in dorsal vagal nucleus

Question 4

CN IX

Answer 4

GSA, GVA, SVA, SVE, GVE
GSA: ear stuff cell bodies in s. ganglion
SVA: taste, cell bodies in i. ganglion
GVA: carotid body, cell bodies in i. ganglion
SVE: stylopharyngeus, nucleus ambiguus
GVE: parotid gland, inferior salivatory nucleus and otic ganglion

Question 5

CN VIII

Answer 5

SSA

vestibular nuclei

Question 6

CN VII

Answer 6

GSA, SVA, SVE, GVE
GSA: ear stuf, spinal trigeminal nucleus
SVA: taste, solitary (gustatory) nucleus
SVE: mm facial expression, facial motor nucleus
GVE: submandibular ganglion, pterygopalatine ganglion, superior salivatory nucleus

Question 7

CN VI

Answer 7

GSE

abducens nucleus

Question 8

CN V

Answer 8

spinal trigeminal nucleus
principle trigeminal nucleus
mesencephalic trigeminal nucleus

Question 9

CN IV

Answer 9

GSE

trochlear nucleus

Question 10

CN III

Answer 10

GSE, GVE
GSE: oculomotor nucleus
GVE: edinger westphal nucleus, ciliary ganglion