Peripheral Nervous System

Question 1

the ____ plexus produces the nerves that innervate the upper limbs

Answer 1

brachial

Question 2

spinal nerves enter/leave the spinal column via the ____ foramina

Answer 2

intervertebral

Question 3

carpal tunnel syndrome involves compression and irritation of the right ____ nerve

Answer 3

median n.

Question 4

douloureoux is neuralgia of the _____ nerve

Answer 4

trigeminal n.

Question 5

trauma to the right medial elbow is likely to damage the ____ nerve

Answer 5

ulnar n.

Question 6

trauma to the anterior side of the left lateral elbow is likely to damage _____ nerve. it is likely to cause an inability to contract the wrist extensors

Answer 6

radial n.

Question 7

a condition that may result from the fracture of the ethmoid bone; may cause partial or total loss of smell

Answer 7

anosmia

Question 8

damage to the _______ nerve may cause ptosis of the eyelids

Answer 8

oculomotor n.

Question 9

paralysis of the chewing muscles on one side of the head could be caused by damaged to the ______ nerve on that side

Answer 9

(mandibular branch of the) trigeminal n.

Question 10

irritation and swelling of the _____ nerve may result in Bell Palsy

Answer 10

facial n.

Question 11

list 4 nerve plexuses

Answer 11

1. cervical plexuses 2. brachial plexus 3. lumbar plexus 4. sacral plexus

Question 12

name a nerve on the cervical plexus

Answer 12

phrenic n.

Question 13

name a nerve on the brachial plexus

Answer 13

radial n.

Question 14

name a nerve on the lumbar plexus

Answer 14

femoral n.

Question 15

name a nerve on the sacral plexus

Answer 15

sciatic, gluteal nn.

Question 16

list the cranial nerves in order of their emergence from the CNS, proceeding from the superiormost (olfactory nerves) to inferiormost.

Answer 16

optic - oculomotor- trochlear - abducens - facial - glossopharyngeal - vagus - hypoglossal

Question 17

the only cranial nerve which extends beyond the head and neck region

Answer 17

vagus n.

Question 18

its three branches contain the major sensory nerves of the face

Answer 18

trigeminal n.

Question 19

nerve which carries only the sensory afferents of the hearing and balance

Answer 19

vestibulocochlear n.

Question 20

nerves which pierce the cribriform plate of the ethmoid bone to bring sensory information directly into the brain

Answer 20

Olfactory n.

Question 21

carries motor efferents to control four extrinsic eye muscles as well as the levator plapabrae superioris muscles

Answer 21

oculomotor n.

Question 22

contains motor efferents controlling the chewing muscles

Answer 22

trigeminal n.

Question 23

its 5 divisions contain motor efferents controlling the muscles of the face

Answer 23

facial n.

Question 24

contains motor efferents controlling the superior oblique muscle of the eye

Answer 24

trochlear n.

Question 25

nerves carrying visual afferents into the brain

Answer 25

Optic n.

Question 26

nerve number II

Answer 26

Optic n.

Question 27

nerves carrying taste afferents into the brain

Answer 27

Facial n., Glossopharyngeal n., Vagus n.

Question 28

nerve number VII

Answer 28

facial n.

Question 29

nerve number IX

Answer 29

glossopharyngeal n.

Question 30

nerve number X

Answer 30

vagus n.

Question 31

nerves carrying smell afferents into the brain

Answer 31

Olfactory n.

Question 32

Nerve number I

Answer 32

olfactory n.

Question 33

nerves carrying motor efferents controlling extrinsic eye muscles

Answer 33

oculomotor n., abducens n., trochlear n.

Question 34

nerve number III

Answer 34

oculomotor n.

Question 35

nerve number IV

Answer 35

abducens n.

Question 36

nerve number VI

Answer 36

trochlear

Question 37

nerve supplying motor efferents to the diaphragm

Answer 37

phrenic n.

Question 38

the largest nerve in the body

Answer 38

sciatic n.

Question 39

a nerve running through the medial thigh and leg; provides sensory afferents to servicing the hip and knee joints

Answer 39

saphenous n.

Question 40

a large nerve, some branches innervate the anterior thigh muscles (quadriceps), the sartorius and the iliacus muscles

Answer 40

femoral n.

Question 41

the part of the sciatic nerve servicing the triceps surae, most of hamstrings, adductor magnus mm.

Answer 41

tibial n.

Question 42

the nerve servicing most of the adductor muscles and the skin on the medial thigh

Answer 42

obturator nerve

Question 43

the nerve servicing the skin of the lateral thigh and peritoneum

Answer 43

lateral femoral cutaneous

Question 44

the nerve servicing the skin of the buttocks, posterior thigh, and popliteal area

Answer 44

posterior femoral cutaneous

Question 45

the nerve servicing the skin of the anterior and medial thigh

Answer 45

anterior femoral cutaneous

Question 46

the nerve servicing the skin & muscles of the perineum and the ext. anal sphincter

Answer 46

pudendal n.

Question 47

earphones on the head test your ability to perceive various frequencies of sound

Answer 47

vestibulocochlear n.

Question 48

dr. asks you to smile, frown, crinkle the forehead

Answer 48

facial n.

Question 49

dr. asks you to move lower jaw from side to side and then to bite down on a piece of wood

Answer 49

trigeminal n.

Question 50

dr. waves an open vial in front of your nose and asks you to identify the odor

Answer 50

olfactory n.

Question 51

dr. asks you to read an eye chart on the wall using only one eye

Answer 51

Optic n.

Question 52

dr. moves her pen back and forth in front of you and tests how well eyes are able to tract the pen

Answer 52

oculomotor n.

Question 53

the dr. shines a light into eye and notes pupillary response

Answer 53

oculomotor n.

Question 54

the ability to taste various substances on the anterior 2/3 of the tongue and tearing is assessed using ammonia fumes

Answer 54

facial n.

Question 55

facial symmetry is assessed

Answer 55

facial n.

Question 56

dr. checks the strength of the SCM and trapezius muscles as the head rotates and shoulders a shrugged against resistance

Answer 56

accessory n.

Question 57

dr. asks you to stick out tongue and the retract it while noting any deviations

Answer 57

hypoglossal n.

Question 58

dr. asks you to speak and cough, tests gag an swallowing reflexes with a tongue depressor

Answer 58

vagus n.

Question 59

T/F the ventral roots bring sensory information into the spinal cord

Answer 59

False

Question 60

T/F the ventral and dorsal rami of all the spinal nerves (C1 - S5) partake in the formation of nerve plexuses before reaching their effector organs

Answer 60

False