Exam (elaborations)
A&P 2 Final Exam portage learning QUESTIONS AND ANSWERS (2024/2025) (VERIFIED ANSWERS)
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- A&P
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- Portage Learning
A&P 2 Final Exam portage learning QUESTIONS AND ANSWERS (2024/2025) (VERIFIED ANSWERS)
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A&P 2 Final Exam portage learning1.This is a collection of cell bodies found in the peripheral nervous system.-
: Ganglia
2.This part of the autonomic system increases digestion.: Parasympathetic
3.The dorsal root of a nerve contains what type of neurons?: Sensory
(Afferent)
4.This part of a neuron conducts nerve impulses towards the cell body.:
Den- drites
5.An interneuron inside the spinal cord is part of the:: D. Central
nervous system
6.The neuron pictured, below, is best described as:: Multipolar
,7.True or false: Neurons do not physically touch one another.: True
8.Describe the synthesis and storage of neurotransmitters.: The neuron
cell body manufactures neurotransmitters, which are stored in secretory
vesicles at the end of axon terminals.
9.An afferent neuron carries information:: From the peripheral to the
central nervous system
10.A postsynaptic neuron would be found:: After the synapse
11.What is the location and function of Astrocytes?: Location: Central
nervous system (CNS)
Function: Regulation of chemical environment inside CNS, forming a
physical barrier (blood-brain-barrier) by wrapping around blood
capillaries
12.A patient's left thumb was severed in a cooking accident and then reat-
,tached during surgery. Would the patient be expected to regrow axons in
their thumb? Why or why not?: Yes; Peripheral nerves can regenerate the
length of the axon through axonal regeneration because of the growth
of Schwann cells ahead of the axon.
13.Name and describe what is occurring in the neuron cell membrane
uring this
w to close
in section 4 of the diagram. Include the charge of the membraneand
d
phase.: Afterpolarization (Hyperpolarization) Potassium gatesesting
are state
slo there is an undershoot of the potential.
The charge drops below -70mV and then returns to -70mV once
at r again.
14.At rest, a neuron plasma membrane is:: -70 mV
, 15.Which of the following is true concerning the sodium-potassium pump?:
It must remain in constant operation to maintain the resting state.
16.True or false: A sensory neuron is signaling the body of a light touch.
This means that the strength of the action potential is weaker than usual.
Explain your reasoning.: False
17.Which of the following statements is true concerning the
neuromuscular junction?: The NMJ terminates on a muscle fiber.
18.What prevents continuous stimulation of a nerve synapse and how is
this accomplished?: The short existence of neurotransmitters in the
synapse prevents continuous stimulation. Some synapses contain
enzymes that rapidly inactivate neurotransmitters and other synapses
rapidly absorb the neurotransmitter.
19.What neurotransmitter is found at the neuromuscular junctions?:
Acetyl- choline (ACh)
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