neuro1

Question 1

CN1 name

Answer 1

olfactory

Question 2

CN1 exit through the skull

Answer 2

cribiform plate

Question 3

CN 2 name

Answer 3

optic nerve

Question 4

CN 2 exit through the skull

Answer 4

optic canal

Question 5

CN 2 function

Answer 5

visual acuity, visual fields, color; afferent limb of pupillary reflex

Question 6

CN 3 name

Answer 6

oculomotor

Question 7

CN 3 exit through the skull

Answer 7

superior orbital fissure

Question 8

CN 3 function

Answer 8

SR, IR, MR, IO, levator palpebrae, efferent limb of pupillary reflex

Question 9

CN 4 name

Answer 9

trochlear nerve

Question 10

CN 4 exit through the skull

Answer 10

superior orbital fissure

Question 11

CN 4 function

Answer 11

superior oblique

Question 12

CN 5 name

Answer 12

trigeminal

Question 13

CN 5 exit through the skull

Answer 13

superior orbital fissure (V1), foramen rotundum (V2), and foramen ovale (V3)

Question 14

CN 5 function

Answer 14

muscles of mastication, tensor tympani, tensor veli palitini, facial sensation, afferent limb of corneal reflex

Question 15

CN 6 name

Answer 15

abducens

Question 16

CN 6 exit through the skull

Answer 16

superior orbital fissure

Question 17

CN 6 function

Answer 17

LR

Question 18

Cn 7 name

Answer 18

facial

Question 19

CN 7 exit through the skull

Answer 19

nternal auditory meatus

Question 20

CN7 function

Answer 20

muscles of facial expression, stapedius, taste on anterior two thirds of tongue, efferent limb of corneal reflex

Question 21

CN 8 name

Answer 21

vestibulocochlear

Question 22

CN 8 exit through the skull

Answer 22

internal auditory meatus

Question 23

CN 8 function

Answer 23

hearing, vestibular function

Question 24

CN 9 name

Answer 24

glossopharyngeal

Question 25

CN 9 exit through the skull

Answer 25

jugular foramen

Question 26

CN 9 function

Answer 26

movement of palate, sensation over palate, and pharynx, taste over posterior 1/3 of tongue, afferent limb of gag reflex

Question 27

cN 10 name

Answer 27

vagus

Question 28

CN 10 exit through the skull

Answer 28

jugular foramen

Question 29

CN 10 function

Answer 29

movement of palate, sensation over pharynx, laryns, and epiglottis, efferent limb of gag reflex, parasymp function of viscera

Question 30

CN 11 name

Answer 30

accessory nerve

Question 31

CN 11 exit through the skull

Answer 31

jugular foramen

Question 32

CN 11 function

Answer 32

sternocleidomastoid and trapezius movement

Question 33

CN 12 name

Answer 33

hypoglossal

Question 34

CN 12 exit through the skull

Answer 34

hypoglossal foramen

Question 35

CN 12 function

Answer 35

movement of the tongue

Question 36

failure of right palate to elevate

Answer 36

pathology of right glossopharyngeal nerve

Question 37

weakness on turning to the left

Answer 37

right accessory nerve (CN 9) problem

Question 38

tongue deviates toward the right

Answer 38

problem with the right hypoglossal nerve

Question 39

should abduction muscle, nerve, root

Answer 39

deltoid, axillary nerve, C5

Question 40

elbow flexion muscle, nerve, root

Answer 40

biceps, musculocutaneous nerve, C5/C6

Question 41

elbow extension muscle, nerve root

Answer 41

triceps, radial nerve, C7

Question 42

wrist extension muscle nerve, root

Answer 42

extensors carpi radialis (C6), and ulnaris (C7), radial nerve

Question 43

wrist flexion muscle, nerve, root

Answer 43

flexors carpi radialis (C7), median nerve and ulnaris (C8), ulnar nerve

Question 44

finger extension muscle, nerve, root

Answer 44

extensor digitorum, radial nerve, c7

Question 45

finger flexion muscle, nerve, root

Answer 45

flexors digitorum profundus and superficialis, median and ulnar nerves, C8

Question 46

thumb abduction muscles, nerve, root

Answer 46

abductor policis brevis, median nerve, T1

Question 47

finger abduction muscle, nerve, root

Answer 47

dorsal interossei, ulnar nerve, T1

Question 48

hip flexion muscle, nerve, root

Answer 48

iliopsoas, lumbar plexus and femoral nerve, L1, L2

Question 49

hip extension muscle, nerve, root

Answer 49

gluteus maximus, inferior gluteal nerve, L5, S1, S2

Question 50

knee flexion muscle, nerve, root

Answer 50

hamstrings, sciatic nerve, L5, S1, S2

Question 51

Knee extension muscle, nerve, root

Answer 51

quadriceps femoris, femoral nerve, L3, L4

Question 52

ankle dorsiflex muscle, nerve, root

Answer 52

tibialis anterior, deep peroneal nerve, L4, L5

Question 53

ankle platar flex muscle, nerve, root

Answer 53

gastrocnemius and soleus, sciatic nerve, S1, S2

Question 54

dorsiflex great toe

Answer 54

extensor hallucis longus, deep peroneal nerve, L5

Question 55

ankle inversion

Answer 55

tibialis posterior, tibial nerve, L4, L5

Question 56

ankle eversion

Answer 56

peronei muscle, superficial peroneal nerve, L5, S1

Question 57

MRC grading of muscle power

Answer 57

0- no contraction; 1- flicker or trace of contraction; 2- active movement with gravity elminated; 3- active movement against gravity; 4- active movement against gravity and some resistance; 5- normal power

Question 58

Hoffman's sign

Answer 58

flicking the distal phalanx of the middle finger while observing for flexion of the thumb

Question 59

dysdiadochokinesis

Answer 59

difficulty with rapid alternating movements