Cranial Nerves

Question 1

Pharyngeal arch nerves include ?

Answer 1

5,7,9,10,11

Question 2

1st arch innervation and muscles ?

Answer 2

CN5. muscles of mastication, tensor tumpani, tensor veli palatini

Question 3

2nd arch innervation and muscles ?

Answer 3

CN 7. muscles of facial expression, stylohyoid, pos digastric, stapedius

Question 4

3rd and 4th arch innervation and muscles ?

Answer 4

stylopharyngeus, pharyngeal constrictors , and levator palati

Question 5

Opthalmic maxillary portion of CN 5 are associated with sensory, motor, both?

Answer 5

sensory

Question 6

where does CN 5 pass? (on brain)

Answer 6

lateral surface of the pons by passing through mid cerebellar peduncle

Question 7

CNV(1) passes through ? and into ?

Answer 7

a. superior orbital fissure b. orbit

Question 8

CNV(2) passes through ? and into ?

Answer 8

rotundum and into pterygopalatine fossa

Question 9

CNV(3) passes through? and into?

Answer 9

foramen ovale and into infratemporal fossa

Question 10

In CN5 sensory nuclei the Principle trigeminal sensory nuclei is found in? and has to do with ?

Answer 10

rostral pons. touch

Question 11

In CN5 sensory nuclei the Nucleus of Trigeminal Spinal Tract is found in? and has to do with ?

Answer 11

extend through caudal pons. temp and pain

Question 12

In CN5 sensory nuclei the mesencephalic trigeminal nucleus is found in? and has to do with ?

Answer 12

caudual midbrain and rostral pons. proprioception from m. of mastication and teeth

Question 13

CN 5 has Visceral motor components T/F

Answer 13

False

Question 14

Most preganglionic p.s fibers in head travel along branches of CN5. T/F?

Answer 14

False CN5 only has POSTganglionic p.s fibers (no visceral motor components

Question 15

efferents of CN7 include ?

Answer 15

1. branchiomotoe to hyoid arch m (SVE)

2. secretomotor(p.s)to pterygopalatine and submandibular ganglia (GVE)

Question 16

p.s)to pterygopalatine and submandibular ganglia (GVE) central nucleus controls ?

Answer 16

superior salivatory nucleus (GVE)

Question 17

Afferents in CN7?

Answer 17

1. geniculate ganglion in temporal bone
2. ant 2/3 of tongue and taste buds (SVA)
3. smaller touch and pain

Question 18

CN 7 exits skull through

Answer 18

sylomastoid foramen

Question 19

3 Major branches of the temporal bone include ?

Answer 19

1. greater petrosal n.
2. facial n.
3. chorda tymani n.

Question 20

parasympathetic fibers of the greater petrosal n innervate

Answer 20

lacrimal glands and small mucous glands of the palate and nasopharynx

Question 21

parasympathetic fibers of the chordae typani innervate?

Answer 21

submandibular ganglion to submand. & sublingual glands

Question 22

lesions of CN7 can cause

Answer 22

1. sensitivity to loud sounds(stapedius
2. failure of lacrimation
3. failure of salvation in lower oral cavity
4. loss of taste

Question 23

CN9 is related to this pharyngeal pouch? arch ?

Answer 23

2nd.3rd

Question 24

CN9 enters and exits through ?

Answer 24

jugular foramen

Question 25

CN9 gives branches to what structures ?

Answer 25

base of tongue, pharynx, bifurcation of common carotid a

Question 26

Efferents of CN9

Answer 26

Secretomotor control of the parotid gland from otic ganglion via lesser perosal n. (GVE)

Question 27

Afferents of CN9

Answer 27

1. Sup and inf ganglia 2. tatse pos 1/3 3. sensory from carotid bosy and sinus 4. touch and pain form middle ear, tonsildm back of soft palate and pharynx

Question 28

Functional component of Afferent of CN9: touch and pain form middle ear, tonsildm back of soft palate and pharynx

Answer 28

GSA

Question 29

Efferents of CN 10 include

Answer 29

4th and 6th arch (SVE) | Preganglionic P.S to all visceral structures from neck to d.colon

Question 30

afferents of CN 10 include

Answer 30

1. sensory input from cervical thoracic and abdominal visceral 2. epiglottis 3. touch and pain from ear and meninges

Question 31

superior laryngeal branch of CN10 controls

Answer 31

motor to cricothyroid m.(phonation)

Question 32

Recurrent laryngeal of CN10

Answer 32

motor to all other laryngeal mm. and to constrictor & esophagus

Question 33

Visceromotor (GVE) fibers from the Dorsal Motor Nucleus of the Vagus target ?

Answer 33

parasympathetic ganglia in the heart, lungs and abdominal viscera, as far down as the beginning of the descending colon.

Question 34

Problems w/ CN10 include

Answer 34

swallowing and phonation | cause painful neralgia

Question 35

gag reflex relates to cn ?

Answer 35

9

Question 36

CN 11 innervates

Answer 36

trap and SCM

Question 37

Motor nucleus of CN 11 lies between ?

Answer 37

C1-C6

Question 38

roots of CN 11 exit laterally T/F?

Answer 38

T

Question 39

Lesions on CN11 Can affect

Answer 39

contralateral head turns, shoulder elevation and rotation