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ASU BIO 181 Exam 3 Questions and Correct Answers the Latest Update and Recommended Version $12.49   Add to cart

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ASU BIO 181 Exam 3 Questions and Correct Answers the Latest Update and Recommended Version

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  • ASU BIO 181
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  • ASU BIO 181

Excitatory synapses make the post-synaptic cell less likely to fire. False The neural tissues are: Spinal cord, sensory neurons, and brain How do the glial cells (i.e., myelin sheath) speed up the firing of neurons? The cell wraps extensions of a fatty insulating substance (myelin) around t...

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  • October 23, 2024
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  • ASU BIO 181
  • ASU BIO 181
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ASU BIO 181 Exam 3 Questions and
Correct Answers the Latest Update and
Recommended Version
Excitatory synapses make the post-synaptic cell less likely to fire.

✓ False


The neural tissues are:

✓ Spinal cord, sensory neurons, and brain


How do the glial cells (i.e., myelin sheath) speed up the firing of neurons?

✓ The cell wraps extensions of a fatty insulating substance (myelin) around the axons of
neurons.


The action potential is:

✓ A result of the movement of ions.


Receptors are made from membrane-bound polyribosomes.

✓ True


List the 4 types of glial cells and list a phrase to describe their function.

✓ 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


Acetylcholine exocytosed from the presynaptic cell travels to the postsynaptic cell to start the

action potential in the postsynaptic cell.

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✓ True


When the presynaptic cell contacts a muscle cell, the synapse area is called a motor end

plate.

✓ True


Potassium ions are at high concentrations inside of cells including in neurons.

✓ True


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

✓ 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.




Fast neurons as described in lecture are fast because they are surrounded by a type of glial

cell that results in a myelin coating.

✓ False


Voltage-gated ion channels open when a protein binds to the receptor.

✓ False



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