Spinal cord and Spinal Nerves

Question 1

ganglia

Answer 1

where synapses occur; cluster of cell bodies in the PNS

Question 2

the dorsal side of the spinal cord integrates… info

Answer 2

sensory

Question 3

the ventral side of the spinal cord integrates… info

Answer 3

motor

Question 4

Are motor neurons efferent or afferent

Answer 4

efferent

Question 5

Are sensory neurons afferent or efferent

Answer 5

afferent

Question 6

Grey matter vs white matter

Answer 6

grey matter= unmyelinated; consists of sensory and motor nuclei; lots of synapses
white matter: consists of axons carrying information to and from the brain

Question 7

If the dorsal root nerve of a spinal nerve is severed

Answer 7

sensory input would be blocked

Question 8

the dorsal ramus sends _______ info where

Answer 8

sensory and motor info to the back of the body

Question 9

the ventral ramus send ____ info where

Answer 9

sensory and motor info to the other parts of the body besides the back (the front, side, limbs, etc)

Question 10

what if the dorsal ramus of a spinal nerve is severed?

Answer 10

both sensory and motor information from the back would be blocked

Question 11

How many pairs of cranials nerves are there

Answer 11

12 pairs

Question 12

Cranial Nerve I

Answer 12

Olfactory; smell
sensory only

Question 13

Cranial Nerve II

Answer 13

Optic nerve; vision
sensory only

Question 14

Cranial Nerve III

Answer 14

Oculomotor: moves 4 out of 6 eye muscles; controls pupil size; eye shape

Question 15

Cranial Nerve IV

Answer 15

Trochlear: moves one eye muscle
motor

Question 16

Cranial Nerve V

Answer 16

trigeminal; pain, temp, touch, chewing; opthalamic, maxillary, and mandibular nerves; Greatest sensory function; skin dermatome
sensory and motor

Question 17

Cranial Nerve VI

Answer 17

abducens; motor, one of the eye muscles

Question 18

Cranial nerve VII

Answer 18

facial; sensory, motor and parasympathetic
facial expression, taste, control of salivary glands, and tears

Question 19

Cranial Nerve VIII

Answer 19

vestibulocochlear; sensory
hearing and balance

Question 20

Cranial Nerve IX

Answer 20

glossopharyngeal
sensory, motor, and parasympathetic
general taste sensation posterior 1/3 of the tongue, blood pH and gasses, swallowing, salivary gland

Question 21

cranial nerve X

Answer 21

vagal nerve; sensory, motor, and parasympathetic
swallowing, speaking, visceral sensory and motor

Question 22

XI

Answer 22

motor only; innervates trapezuis and sternocleidomastoid- helps us strug our shoulders

Question 23

Cranial Nerve XII

Answer 23

hypoglossal; motor only; movement of the tongue