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WorksheetsCommunication within & between neurons part 2
Total questions: 26
Worksheet time: 11mins
Name
Class
Date
1.
What maintains "equilibrium potential" in a resting neuron?
a)
electrostatic pressure & diffusion
b)
Diffusion only
c)
endocytosis
d)
exocytosis
2.
What number on the graph represents the Depolarization phase?
a)
1
b)
2
c)
3
d)
4
3.
What number on the graph represents the Hyperpolarization phase?
a)
1
b)
2
c)
3
d)
4
4.
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
5.
a signal molecule that transmits nerve impulses across synapses
a)
neuron
b)
neurotransmitter
c)
nerve
d)
action potential
6.
nerve impulse
a)
action potential
b)
resting potential
c)
membrane potential
d)
synapse
7.
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
8.
-70 mV is the measure of a
a)
Threshold Potential
b)
Action Potential
c)
Resting Potential
d)
End Point Potential
9.
A membrane potential becoming less negative is called
a)
hyperpolarization
b)
depolarization
c)
repolarization
d)
polarization
10.
The nerve cell extension that is longer and sends information is called a(n)
a)
neuron
b)
cell body
c)
axon
d)
dendrite
11.
Describes the fact that a neuron fires at the same intensity despite the intensity of the stimulus.
a)
Threshold
b)
Repolarization
c)
All or None Principle
d)
Action Potential
12.
Neurotransmitters are released from the
a)
Dendrites
b)
Post-synaptic neuron
c)
Presynaptic neuron
d)
Axon
13.
In order for a neuron to have an action potential, the neuron must receive more
a)
excitatory neurotransmitters
b)
inhibitory neurotransmitters
c)
agnostic neurotransmitters
d)
antagonistic neurotransmitters
14.
The reward center of the brain is most closely associated with this neurotransmitter's pathways.
a)
Dopamine
b)
Serotonin
c)
GABA
d)
Ach
15.
Excess neurotransmitters in the synapse that goes back into the presynaptic neuron.
a)
Resting potential
b)
Reuptake
c)
Retroactivity
d)
Repolarization
16.
X
a)
Axon Terminal Button
b)
Neurotransmitters
c)
Dendrite
d)
Synapse
17.
Y
a)
Axon Terminal Button
b)
Neurotransmitters
c)
Dendrite
d)
Synapse
18.
Z
a)
Dendrite
b)
Axon Terminal
c)
Neurotransmitters
d)
Synapse
19.
Gaps in the myelin sheath are called this.
a)
Nodes of Ranvier
b)
Axon terminals
c)
Synapses
d)
Neurotransmitters
20.
Produce the fatty, white substance that is wrapped around the axon of a neuron.
a)
Schwann's Cells
b)
Glial Cells
21.
The area between the pre-synaptic cell and the post-synaptic cell is termed the synaptic cleft.
a)
True
b)
False
22.
Receptors that bind the neurotransmitter at the post-synaptic cell membrane are voltage-gated.
a)
True
b)
False
23.
The sodium-potassium pump is involved in establishing the resting membrane potential.
a)
True
b)
False
24.
Which is the correct sequence in the transmission of a neural impulse?
a)
axon, dendrite, cell body, synapse
b)
dendrite, axon, cell body, synapse
c)
synapse, axon, dendrite, cell body
d)
dendrite, cell body, axon, synapse
25.
Multiple sclerosis is an autoimmune disease in which the body's own immune system destroys the _____________ of the nerve axons.
a)
Myelin
b)
Dendrites
c)
Axon Terminal
d)
Nodes of Ranvier
26.
An axon conducts nerve impulses _________ the cell body.
a)
away from
b)
toward
c)
both toward and away
d)
around, bypassing
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