Ques Not yet graded / 2.5 pts tion 1
Your Answer:
This is a bundle of axons found in the peripheral nervous system.
Nerve
Nerve
Q Not yet graded / 2.5 pts uestion 2
Your Answer:
This part of the autonomic system a
...
Ques Not yet graded / 2.5 pts tion 1
Your Answer:
This is a bundle of axons found in the peripheral nervous system.
Nerve
Nerve
Q Not yet graded / 2.5 pts uestion 2
Your Answer:
This part of the autonomic system accelerates the heart beat and
increases breathing rate.
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sympathetic nervous system
Sympathetic
Ques Not yet graded / 2.5 pts tion 3
Your Answer:
The ventral root of a nerve contains what type of neurons?
motor neurons
Motor (Efferent)
Ques Not yet graded / 2.5 pts tion 4
Your Answer:
This part of a neuron conducts nerve impulses towards the cell body.
dendrites
Dendrites
Q 2 / 2 pts uestion 5
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A neuron going to the bicep of the forearm is part of the:
A. Central nervous system
B. Peripheral nervous system
C. Autonomic system
D. Somatic system
E. A&C
F. B&D Correct!
Ques 2 / 2 pts tion 6
The neuron pictured, below, is best described as:
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Bipolar Correct!
It has two extensions from the central cell body.
Multipolar
Unipolar
Pseudounipolar
Ques 2 / 2 pts tion 7
True or false: Neurons do not physically touch one another.
True Correct!
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Neurons do not physically touch. They are separated by
synapses.
False
Ques Not yet graded / 4 pts tion 8
Your Answer:
Describe the function and release of neurotransmitters.
Neurotransmitters are chemicals that are stored in the axon terminal
vesicles. When neurotransmitters are released they carry the nerve
impulse to one neuron to the next.
Neurotransmitters are chemicals stored inside secretory
vesicles (axon terminal vesicles) at the end of the axon
terminals.
When neurotransmitters are released by the axon terminal
vesicles, they carry the transmission of the nerve impulse
from one neuron to another.
Ques 2 / 2 pts tion 9
An afferent neuron carries information:
From the central to the peripheral nervous system
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From the peripheral to the central nervous system Correct!
Within the central nervous system
Within the peripheral nervous system
Ques 2 / 2 pts tion 10
A postsynaptic neuron would be found:
Before the synapse
After the synapse Correct!
Inside the synapse
Only in the central nervous system
Ques Not yet graded / 3 pts tion 11
Your Answer:
What is the location and function of Satellite cells?
Satellite cells surround the body of peripheral neurons. They regulate the
cell body environment.
Location: Peripheral nervous system (PNS)
Function: Regulation of environment of neuron cell bodies
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Ques Not yet graded / 3 pts tion 12
Your Answer:
A patient’s spinal cord was severed in a car accident. Would the patient
be expected to regrow axons in their spinal cord? Why or why not?
Yes it would be expected to regrow axons in the spinal cord. If a
peripheral nerve axon is severed, the schwann cells grow ahead of the
axon which allows the path for the axon to follow as it grows.
No; Only peripheral system axons are capable of
regeneration. The spinal cord is in the central nervous
system.
Ques Not yet graded / 10 pts tion 13
Name and describe what is occurring in the neuron cell membrane in
section 4 of the diagram. Include the charge of the membrane during this
phase.
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Your Answer:
Afterpolarization. During afterpolaraization, voltage drops below -70mV
and then returns to -70mV when the resting state begins again.
Afterpolarization (Hyperpolarization) Potassium gates are
slow to close and there is an undershoot of the potential.
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