Week 10 - Cranial & Peripheral Nerves

Question 1

The accomodation reflex of the of eye is dependent upon which cranial nerves? Identify which is sensory and which is motor.

Answer 1

CN II - Optic - Sensory

CN III - Oculomotor - Motor

Question 2

The pupillary light reflex of the eye is dependent upon which cranial nerves? Identify which is sensory and which is motor.

Answer 2

CN II - Optic - Sensory

CN III - Oculomotor - Motor

Question 3

The corneal reflex requires sensory input via ______ and motor reaction as blinking via ______

Answer 3

CN V - Trigeminal

CN VII - Facial

Question 4

The gag (aka _______) reflex sensory input via ______ and motor reaction as gagging via ______

Answer 4

phayngeal
CN IX - Glossopharyngeal
CN X - Vagus

Question 5

Which cranial nerve controls abduction of the eye?

Answer 5

CN VI - Abducens

Question 6

Which cranial nerve controls superior oblique muscle of the opposite eye?

Answer 6

CN IV - Trochlear

Question 7

Which cranial nerve is responsible for mastication and sensations from the head and face?

Answer 7

CN V - Trigeminal

Question 8

Which cranial nerve controls all sensations but taste from the anterior 2/3 of the tongue?

Answer 8

CN V - Trigeminal

Question 9

Which cranial nerve controls all sensations, including taste from the root of the tongue?

Answer 9

CN IX - Glossopharyngeal

Question 10

Which cranial nerve controls taste sensations from the epiglottis and pharynx?

Answer 10

CN X - Vagus

Question 11

Which cranial nerve is in charge of facial expressions, lacrimation and salivation?

Answer 11

CN VII - Facial

Question 12

Which cranial nerve is the major nerve of swallowing and also in control of parotid gland secretion?

Answer 12

CN IX - Glossophayngeal

Question 13

Which cranial nerve is sensory for hearing and equilibrium and is tested by the application of the tuning fork?

Answer 13

CN VIII - Vestibulocochlear

Question 14

Which cranial nerve operates w/ SCM and trapezius muscle?

Answer 14

CN XI - Accessory

Question 15

Which cranial nerve is in control of tongue movement?

Answer 15

CN XII - Hypoglossal

Question 16

Which cranial nerve is considered the longest nerve of the human body and is in control of parasympathetic activities of thoracic, abdominal and pelvic organs?

Answer 16

CN X - Vagus

Question 17

The _____ nerve controls the diaphragm and is part of the _______ plexus. It originates from the anterior rami of spinal nerves _______

Answer 17

phrenic
cervical
C3, C4, C5

Question 18

The _____ nerve controls extensor muscles of the upper extremity and is part of the _______ plexus. Its sensory distribution on the arm and hand is ________

Answer 18

radial
brachial
posteriolateral aspet of the arm including lateral 3.5 fingers but not finger nails

Question 19

Which peripheral nerve is responsible for most flexor muscles of the upper extremity, and when injured, results in carpal tunnel syndrome?

Answer 19

median

Question 20

Which nerve operates w/ movement of the thumb?

Answer 20

median

Question 21

Which nerve controls abduction-adduction of 2nd-5th fingers?

Answer 21

ulnar

Question 22

Which nerve controls muscles and skin of the posterio-medial and anterio-medial arm/hand surface, including little finger and the medial half of the ring finger?

Answer 22

ulnar

Question 23

The _______ nerve is the largest nerve of the lumbar plexus and controls ____________

Answer 23

femoral

hip flexion and knee extension

Question 24

The _____ nerve is the largest nerve of the human body and is in control of _________

Answer 24

sciatic

posterior thigh muscles

Question 25

List major nerves of the lumbo-sacral plexus

Answer 25

superior gluteal, inferior gluteal, nerve to piriformis, sciatic, tibial, common fibular, deep fibular, pudendal

Question 26

The lumbo-sacral plexus supplies the ________

Answer 26

buttocks, perineum, lower limbs

Question 27

The superior gluteal innervates _______ and controls _______

Answer 27

gluteus medius, gluteus minimus, fascia latae muscles

hip abduction

Question 28

The inferior gluteal innervates _______ and controls ______

Answer 28

gluteus maximus

hip extension

Question 29

The sciatic nerve splits above the knee into _________

Answer 29

tibial nerve
common fibular (peroneal) nerve

Question 30

Sensory fibers of the tibial nerve are known as _____

Answer 30

sural nerve

Question 31

The pudendal nerve is responsible for motor function of ______ and sensory function of ________

Answer 31

voluntary sphincters, skeletal muscles of the perineum

skin of the genitalia

Question 32

The genitofemoral nerve controls _________

Answer 32

adjustment of cremastor muscle

Question 33

Lateral strabismus can occur with injury to which nerve(s)?

Answer 33

CN III, CN IV

Question 34

Medial strabismus can occur with injury to which nerve(s)?

Answer 34

CN VI

Question 35

Which cranial nerve controls taste sensations from anterior 2/3 of the tongue?

Answer 35

CN VII - Facial