WorksheetsAction Potential of a Neuron
Total questions: 10
Worksheet time: 2mins
Name
Class
Date
1.
When does repolarization begin?
a)
-40 mV
b)
40 mV
c)
-70 mV
d)
-55 mV
2.
What triggers the threshold potential?
a)
A stimulus
b)
Sodium ions
c)
An axon
d)
An electrical impulse
3.
Repolarization happens after depolarization.
a)
True
b)
False
4.
What is the resting potential of a neuron?
a)
80 mV
b)
-35 mV
c)
-70 mV
d)
35 mV
5.
Which ions are related to the action potential?
a)
Na+
b)
Calcium
c)
Sodium
d)
Na+, K+
6.
What is the refractory period?
a)
When all the channels are open
b)
When the Na+ channel is open
c)
When none of the channels are open
d)
When both the Na+ and K+ channels are open
7.
Hyperpolarization is another term to describe the refractory period.
a)
True
b)
False
8.
Which ion gates open first?
a)
Sodium
b)
Potassium
9.
Why do the sodium channels close during repolarization?
a)
Because why not
b)
To prevent firing another action potential
c)
So the potassium channels can open
d)
None of the above
10.
Which label is NOT correct?
a)
A. Depolarization
b)
B. Depolarization
c)
E. Refractory Period
d)
D. Repolarization
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