Nervous System-Chapter 44 Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

detect stimulus, photoreceptors, chemoreceptors

A

sensory receptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

respond to stimuli, muscles, gland

A

motor effectors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

brain and spinal cord

A

central nervous system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

sensory and motor neurons

A

peripheral nervous system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

carry impulse to the CNS

A

sensory neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

carry impulses from CNS to effectors

A

motor neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

provide more complex reflexes and associative functions, majority of neurons

A

interneurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

enlarged part containing nucleus

A

cell body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

short, cytoplasmic extensions that receive stimuli

A

dendrites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

single, long extension that conducts impulses away from cell body

A

axon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

multiple layers of cell membranes wrapped around axons

A

myelin sheath

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

myelinated axons in CNS form _____, form _________ in PNS

A

white matter, nerves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

resting, depolarization, repolarization, hyperpolarization

A

steps of an action potential

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

neurotransmitters activate ____________ on the postsynaptic cell

A

ligand-gated ion channels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

bind to ligand-gated ion channel, new AP begins on the postsynaptic cell, action terminated by enzymatic breakdown or cellular reuptake

A

neurotransmitter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How do you increase velocity of conduction?

A

(1) axon has a larger diameter (less resistance)

(2) myelinate axon