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WorksheetsNervous System General Anatomy
Total questions: 25
Worksheet time: 19mins
Name
Class
Date
1.
part of a neuron that receives information from other neurons
a)
axon
b)
dendrites
c)
myelin sheath
d)
synapse
2.
a signal molecule that transmits nerve impulses across synapses
a)
neuron
b)
neurotransmitter
c)
nerve
d)
action potential
3.
Which ions are involved in the electrical nerve impulse?
a)
Iodine and Sodium
b)
Potassium and Sodium
c)
Iron and Sodium
d)
Calcium and Iodine
4.
What contains the nucleus of the neuron?
a)
Terminal Bouton
b)
Cell Body
c)
Axon Hillock
d)
Myelin Sheath
5.
When a neuron is depolarized, what are the first channels to open?
a)
Sodium
b)
Potassium
c)
Calcium
d)
ACTH
6.
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
7.
-70 mV is the measure of a
a)
Threshold Potential
b)
Action Potential
c)
Resting Potential
d)
End Point Potential
8.
A membrane potential becoming less negative is called
a)
hyperpolarization
b)
depolarization
c)
repolarization
d)
polarization
9.
What number on the graph represents the Depolarization phase?
a)
1
b)
2
c)
3
d)
4
10.
What number on the graph represents the Hyperpolarization phase?
a)
1
b)
2
c)
3
d)
4
11.
What is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?
a)
Axon
b)
Dendrites
c)
Node of Ranvier
d)
Myelin Sheath
12.
Which of the following uses ACTIVE transport?
a)
sodium-potassium pump
b)
sodium channel
c)
potassium channel
d)
diffusion
13.
What number(s) on the graph represents the THRESHOLD level of stimulus?
a)
1 and 5
b)
2
c)
3
d)
6
14.
What number on the graph represents the repolarization phase?
a)
1
b)
2
c)
3
d)
4
15.
This type of channel respondes to a change in the electrical potential of the cell membrane
a)
leaky
b)
voltage gated
c)
mechanically gated
16.
Myelinated axons perfom ___________ conduction
a)
saltitory
b)
continuous
17.
Why is hyperpolarization important?
a)
It makes sure the neuron is healthy
b)
It prevents a second, unwanted signal from being sent
c)
It makes sure the neurons are in the correct space
d)
It makes sure the charge is back at -70 mV
18.
Gaps in the myelin sheath are called this.
a)
Nodes of Ranvier
b)
Axon terminals
c)
Synapses
d)
Neurotransmitters
19.
Produce the fatty, white substance that is wrapped around the axon of a neuron.
a)
Schwann's Cells
b)
Glial Cells
20.
What is structure labeled C in the picture?
a)
Dendrite
b)
Axon
c)
Cell Body
d)
Axon Terminal
21.
_____ neurons carry messages away from the central nervous system and out to muscles or glands. The RED neuron in diagram.
a)
sensory
b)
motor
c)
inter
d)
central
22.
Select two examples of effectors.
a)
Neuron
b)
Gland
c)
Muscle
d)
Receptor
23.
What type of neuron is A?
a)
Sensory
b)
Inter
c)
Motor
24.
Which system increases the heart rate?
a)
Sympathetic
b)
Parasympathetic
25.
Which system controls involuntary responses?
a)
Autonomic System
b)
Somatic System
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