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ASU BIO 181 EXAM 3 2024 EXAM TEST COMPLETE QUESTIONS AND CORRECT ANSWERS [VERIFIED AND CORRECT] GRADE A+ $22.99
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ASU BIO 181 EXAM 3 2024 EXAM TEST COMPLETE QUESTIONS AND CORRECT ANSWERS [VERIFIED AND CORRECT] GRADE A+

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ASU BIO 181 EXAM 3 2024 EXAM TEST COMPLETE QUESTIONS AND CORRECT ANSWERS [VERIFIED AND CORRECT] GRADE A+

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  • June 7, 2024
  • 15
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • ASU BIO 181
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ASU BIO 181 EXAM 3

2024 EXAM TEST COMPLETE QUESTIONS AND
CORRECT ANSWERS [VERIFIED AND CORRECT]
GRADE A+


How do the glial cells (i.e., myelin sheath) speed up the firing of
neurons? - (correct answer) The cell wraps extensions of a fatty
insulating substance (myelin) around the axons of neurons.


The action potential is: - (correct answer) A result of the movement
of ions.


Receptors are made from membrane-bound polyribosomes. - (correct
answer) True


List the 4 types of glial cells and list a phrase to describe their function. -
(correct answer) Microglia: cleans up cellular debris- Astrocytes:
support and repair neurons- Schwann Cells: myelinates axons of the
neurons in the PNS- Satellite: form the brain-blood barrier within the
CNS
Excitatory synapses make the post-synaptic cell less likely to fire. -
(correct answer) False

, The neural tissues are: - (correct answer) Spinal cord, sensory
neurons, and brain




Acetylcholine exocytosed from the presynaptic cell travels to the
postsynaptic cell to start the action potential in the postsynaptic cell. -
(correct answer) True


When the presynaptic cell contacts a muscle cell, the synapse area is
called a motor end plate. - (correct answer) True


Potassium ions are at high concentrations inside of cells including in
neurons. - (correct answer) True


The membrane potential (resting potential) is largely set by the Na-K-
ATPase pump. - (correct answer) True


Draw an action potential in the axon of a neuron and indicate which
ions flow into the neuron and out of the neuron as the action potential
passes at the point where the electrodes are in the cell. Be sure to
assign on the Y-axis the mV of each of these areas. This should be as
described in my lectures. - (correct answer)

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