Module 3

Question 1

What structure(s) is(are) located in the peripheral nervous system?

Answer 1

Nerves and Ganglia

Question 2

There are voltage-gated _____ channels located on the axons.

Answer 2

sodium and potassium

Question 3

Which type of neuron can conduct input to the CNS?

Answer 3

Sensory neurons

Question 4

When a neuron receives a stimulatory signal (excited), the membrane potential will _____, and this process is called ______.

Answer 4

increase; depolarization

Question 5

Once a stimulus is strong enough to make the membrane potential on the axon change from -70mV to -55mV, _____ will happen

Answer 5

an action potential

Question 6

An action potential will conduct faster in _____ neurons

Answer 6

myelinated

Question 7

In both central and peripheral nervous tissue, you will be able to find 2 kinds of cells. They are ____

Answer 7

neurons and glia (supporting cells)

Question 8

You may find acons mainly in which matter of the brain?

Answer 8

White matter

Question 9

Membrane potentials of a neuron can change upon receiving stimulations

Answer 9

True

Question 10

What are 3 major parts of a neuron?

Answer 10

Dendrites, axon, cell body (soma)

Question 11

You can voluntarily control all of your motor neurons.

Answer 11

False

Question 12

The nervous system in the human body is composed of

Answer 12

CNS and PNS

Question 13

Which type of glial cells form neurilemma>

Answer 13

Schwann cells

Question 14

Which type of neuron is completely located in the CNS?

Answer 14

Interneurons

Question 15

Most synapses involve the release of neurotransmitter from the ______

Answer 15

axon’s terminal boutons

Question 16

The neurotransmitter is referred to as a ______ binding to its receptor

Answer 16

ligand

Question 17

The chemical being released from the pre-synaptic neuron is called _____. It was stored in ____ before they were released.

Answer 17

neurotransmitter; synaptic vesicles

Question 18

When 2 neurons need to communicate, there’s a structure in between them called _____

Answer 18

synapse

Question 19

The cell that sends the signal/neurotransmitter is the

Answer 19

pre-synaptic neuron

Question 20

The space in between the two communicating cells

Answer 20

synaptic cleft

Question 21

the cell that receives the signal/neurotransmitter

Answer 21

post-synaptic neuron

Question 22

This is located on the post-synaptic membrane

Answer 22

receptor

Question 23

This is located in the pre-synaptic neuron

Answer 23

synaptic vesicles

Question 24

The second cell (signal receiving) in a synapse can be

Answer 24

a muscular cell, a gland, or a neuron

Question 25

Acetylcholine is a(n)

Answer 25

neurotransmitter

Question 26

Velocity of action potential transmission in the aocn is decreased if _____ are damaged

Answer 26

myelines

Question 27

When action potential reaches the terminal boutons of the axon, ____ open

Answer 27

voltage-gated Ca2+ channels

Question 28

The signal received by the postsynaptic cell can only be exitatoruy

Answer 28

false