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Nervous System CH 9 (sec 1-10) Test

Total questions: 47

Worksheet time: 38mins

Name
Class
Date
1.

What are the main types of cells that make up the nervous system?

a)

axons & dendrites

b)

neurons and neuroglial cells

c)

central and peripheral cells

d)

somatic and autonomic cells

2.

Signals enter a neuron through small extensions. A neuron usually has many of these small extensions, known as _______.

a)

dendrites

b)

axons

c)

myelin

d)

ganglia

3.

Neurons have long projections to transmit impulses. What is the name of these projections?

a)

dendrites

b)

axons

c)

myelin

d)

ganglia

4.

The __________ sheath is an electrical insulator, made of layers of lipids that covers the axon.

a)

lipid

b)

microglia

c)

myelin

d)

ganglia

5.

Sodium and potassium ions reverse membrane orientation during an action potential. How do they return to their resting potential positions?

a)

They are pumped across the membrane.

b)

They diffuse across the membrane.

6.

What protein maintains the resting potential of a neuron?

a)

the sodium-potassium pump

b)

the magnesium-potassium pump

c)

the sodium-phosphorus pump

d)

the magnesium-phosphorus pump

7.

The human nervous system can be most generally broken down into the following two major parts:

a)

the autonomic and somatic nervous systems

b)

the central and peripheral nervous systems

c)

the sympathetic and parasympathetic nervous systems

d)

the brain and spinal cord

8.

Transmit information from the CNS to muscles, organs, and glands. Also called efferent nerves.

a)

Sensory nerves

b)

Motor nerves

c)

Mixed nerves

9.

Transmit information from receptors in the body to the CNS. Also called afferent nerves.

a)

Sensory nerves

b)

Motor nerves

c)

Mixed nerves

10.

Primarily senses the internal environment and controls involuntary activities.

a)

somatic nervous system

b)

autonomic nervous system

11.

Primarily senses the external environment and controls voluntary activities about which decisions and commands come from the cerebral cortex of the brain.

a)

somatic nervous system

b)

autonomic nervous system

12.

Controls the fight-or-flight response.

a)

sympathetic division

b)

parasympathetic division

c)

enteric division

13.

Returns the body to normal after the fight-or-flight response has occurred.

a)

sympathetic division

b)

parasympathetic division

c)

enteric division

14.
What is the central nervous system (CNS) made of?
a)
brain and spinal cord
b)
brain and cranial nerves
c)
spinal cord and spinal nerves
d)
cranial nerves and spinal nerves
15.
The part of the neuron that insulates the axon and increases the speed of the neural message within the neuron.
a)
Synapse
b)
Dendrite
c)
Myelin Sheath
d)
Axon Terminal Button
16.

What is the gap between two neurons called?

a)

Impulse

b)

Synapse

c)

CNS

d)

Inter neuron

17.

What are the chemical messages stored in vesicles inside the axon terminal called?

a)

synape

b)

dendrite

c)

neurotransmitter

d)

axon

18.
What does the autonomic nervous system control?
a)
Voluntary movement
b)
Cardiac muscles only
c)
Involuntary responses
d)
The spinal cord
19.
The myelin sheath
a)
makes the signal travel faster
b)
protects the neuron
c)
carries the signal away from the cell body
d)
carries the signal to the cell body
20.
Which part of a neuron RECIEVES information?
a)
axon
b)
dendrite
c)
cell body
d)
axon terminal
21.
Which part of the neuron is a long fiber that send information to other cells?
a)
dendrite
b)
terminal
c)
cell body
d)
axon
22.
Two major branches of the nervous system
a)
central and peripheral
b)
peripheral and motor
c)
motor and sensory
d)
central and motor
23.
A chemical produced by neurons that carries messages to other neurons
a)
myelin sheath
b)
neurotransmitter
c)
axon
d)
axon terminal
24.

Identify #2

a)

axon

b)

cell body

c)

dendrite

d)

myelin sheath

25.

Identify #3

a)

axon

b)

cell body

c)

dendrite

d)

myelin sheath

26.

Identify #6

a)

axon terminals

b)

dendrites

c)

dendrite

d)

schwann cells

27.

Gaps between Schwann cells that increase the speed of the transmission of the signal down the neuron are called

a)

axon terminals

b)

dendrites

c)

myelin

d)

nodes of Ranvier

28.
Label the Neuron-What does the letter "H" represent?
a)
Schwann Cell
b)
Axon
c)
Axon Terminal
d)
Dendrite
29.

Label the Neuron-What space does the letter "G"

represent?

a)

Axon Terminal

b)

Node of Ranvier

c)

Nucleus

d)

Myelin Sheath

30.
Label the Neuron-What does the letter "A" represent?
a)
Axon
b)
Dendrite
c)
Axon Terminal
d)
Cell Body
31.
The part of the neuron that takes information away from the cell body is called a(n) _____________.
a)
dendrite
b)
axon
c)
cell body
d)
Schwann cell
32.

Neuroglia that produce myelin on axons in the peripheral nerves are

a)

schwann cells

b)

astrocytes

c)

oligodendrocytes

d)

microglia

33.

Neuroglia that produce myelin on axons in the brain and spinal cord are

a)

schwann cells

b)

astrocytes

c)

oligodendrocytes

d)

microglia

34.

The blue nerve in the image represents a

a)

sensory neuron

b)

motor neuron

c)

interneuron

35.

An electrical impulse within a single neuron is called a

a)

synapse

b)

membrane potential

c)

action potential

d)

cell body

36.

Depolarization occurs when

a)

sodium channels open

b)

potassium channels open

c)

sodium channels close

d)

potassium channels close

37.

Depolarization is occuring at number

a)

1

b)

2

c)

4

d)

5

38.
What number(s) on the graph represents the Resting Potential?
a)
1 and 2
b)
1 and 5
c)
2 and 3
d)
3 and 4
39.
What number on the graph represents the Hyperpolarization phase?
a)
1
b)
2
c)
3
d)
4
40.
When a neuron is resting, the inside of the axon has a ____________ charge.
a)
positive
b)
negative
41.
In resting potential, neurons have more _________ on the outside of the cell membrane.
a)
K+
b)
NaCl
c)
Na+
d)
Cl-
42.
A chemical produced by neurons that carries messages to other neurons
a)
myelin sheath
b)
neurotransmitter
c)
axon
d)
axon terminal
43.
What type of neuroglial cell attaches neurons to capillaries?
a)
Astrocyte
b)
Oligodendrocytes
c)
Microglial
d)
Ependymal
44.

Small cells that engulf and destroy microbes and cellular debris in the CNS

a)

microglia

b)

horns

c)

neuroglia

d)

astrocytes

45.

CNS neuroglial cells that wrap around axons to create myelin

a)

Oligodendrocyte

b)

Schwann

c)

Satellite

d)

Astrocyte

46.

Cells that are found between neurons and blood vessels and control what nutrients pass to and from neurons in the CNS.

a)

oligodendrocyte

b)

microglial cell

c)

astrocyte

d)

ependymal cell

47.

Support neurons and phagocytize bacterial cells as well as maintaining the health of the neuron.

a)

microglia

b)

astrocytes

c)

ependymal cells

d)

oligodendrocytes

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