BIO 207 - Nervous System Quiz. Questions and Answers. A+ Guide.

Nervous system Quiz



An unmyelinated nerve fiber is ______, whereas a myelinated nerve fiber is ______.

Select one:

a. gray, and composing the gray matter of the brain and spinal cord; white, and composing the white


matter of the brain and spinal cord

b. white, and composing the gray matter of the brain and spinal cord; gray, and composing the white


matter of the brain and spinal cord

c. white, and composing the white matter of the brain and spinal cord; gray, and composing the gray


matter of the brain and spinal cord

d. white, and composing the gray matter of the brain and spinal cord; red, and composing the white


matter of the brain and spinal cord

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The correct answer is: gray, and composing the gray matter of the brain and spinal cord; white, and
composing the white matter of the brain and spinal cord

Question 2

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3



When an action potential passes over the surface of a synaptic knob, what causes the contents of the
vesicles to be released?

, Select one:

a. calcium ions.



b. neuropeptides.



c. sodium ions.



d. neurotransmitters.



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The correct answer is: calcium ions.

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3



What is the most basic level of CNS function?

Select one:

a. spinal reflex



b. ability to work



c. ability to talk