WorksheetsAction Potentials
Total questions: 11
Worksheet time: 9mins
Name
Class
Date
1.
Part of a neuron that receives information from other neurons
a)
axon
b)
dendrites
c)
myelin sheath
d)
synapse
2.
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
3.
When a neuron is depolarized, what are the first channels to open?
a)
Sodium
b)
Potassium
c)
Calcium
d)
ACTH
4.
When a neuron is resting, the inside of the axon has a ____________ charge.
a)
-55 mV
b)
-70 mV
c)
40 mV
d)
-75 mV
5.
When a neuron is not engaged in an impulse.
a)
Resting potential
b)
Action potential
c)
Neural potential
d)
Synaptic potential
6.
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
7.
What number on the graph represents the Depolarization phase?
a)
1
b)
2
c)
3
d)
4
8.
What number on the graph represents the Hyperpolarization phase?
a)
1
b)
2
c)
3
d)
4
9.
Why is -55 mV a significant number?
a)
This is the largest charge achieved during an action potential
b)
This is the threshold required to complete an action potential
c)
This is the resting charge of a neuron
d)
This is the charge when all the sodium is inside the cell
10.
During this stage, K+ channels open and K+ Ions leave the neuron.
a)
Depolarizarion
b)
Repolarization
c)
Hyperpolarization
d)
Resting Potential
11.
Match the following
a)
Depolarization
1.
+30 mV
b)
Resting membrane potential
2.
-70 mV
c)
Threshold potential
3.
-55 mV
100 %
