quiz - nervous system

Question 1

neuron

Answer 1

or nerve cell, its made of the cell body, dendrites, and axons

Question 2

neuroglial

Answer 2

is for support, insulation, nutrients, they outnumber neurons

Question 3

whats a synapse

Answer 3

where 2 neurons connect

Question 4

synaptic knob

Answer 4

distal end of an axon

Question 5

synaptic cleft

Answer 5

gap between neurons at synapse

Question 6

synaptic vesicles

Answer 6

contain neurotransmitters

Question 7

neurotransmitter

Answer 7

biochemical that stimulates a neuron or effector

Question 8

polarization

Answer 8

cell membrane is electrically charged and the unequal distribution fo positive and negative ions

Question 9

depolarization

Answer 9

occurs when the inside of the cell membrane of a neuron becomes less negative

Question 10

action potential

Answer 10

once polarization reaches the threshold potential, an action potential occurs, so the cell membrane becomes more positive, action potential is an all or nothing response

Question 11

repolarization

Answer 11

potassium quickly exits, the cell becomes more negative again, return to resting state

Question 12

how many neurotransmitters have been identified

Answer 12

over 100

Question 13

what are the 2 types of nerves

Answer 13

sensory fibers and motor fibers

Question 14

sensory fibers

Answer 14

carry information to the central nervous system (CNS) for stuff like pain, heat, cold, touch, etc

Question 15

motor fibers

Answer 15

carry information from the central nervous system to effectors, causing muscle contraction or glandular responses

Question 16

olfactory nerve

Answer 16

in the nose

Question 17

optical nerve

Answer 17

in the eyes

Question 18

oculomotor muscle

Answer 18

eye muscles (movement control)

Question 19

trigeminal nerve

Answer 19

sensations in your face

Question 20

facial motor

Answer 20

facial muscles movement

Question 21

vagus nerve

Answer 21

controls a lot of things like heart, lungs, digestive tract

Question 22

locate the brachial plexus

Answer 22

branches off the top of spinal cord around shoulders

Question 23

locate the ulnar nerve

Answer 23

the medial (closer to body) nerve going down the arm to fingers

Question 24

locate the median nerve

Answer 24

the lateral (middle ish of arm) nerve in arm more in the middle

Question 25

locate the radial nerve

Answer 25

in upper arm then runs along back side or arm

Question 26

locate the sacral plexus

Answer 26

branching off of nerves at the lower spinal cord

Question 27

locate the sciatic nerve

Answer 27

goes down the back of the leg