What is the innermost CNS membrane?
a. dura matter
b. arachnoid matter
c. inner meninges
d. grey neurons
e. pia matter
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Question 2) Scurvy is caused by a vitamin C deficiency that prevents the proper development of desmosomes; hence, tissue cells do not hold together.
Indicate whether the statement is true or false
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Question 3) What are the nourishing membranes that lie between the bony covering of the CNS and the nervous tissue?
a. vertebrae
b. ganglions
c. meninges
d. nerve roots
e. glial cells
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Question 4) Opening a gated channel that allows Na+ to diffuse through the plasma membrane would cause the membrane potential to increase.
Indicate whether the statement is true or false
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Question 5) What are the immune defense cells of the CNS called?
a. astrocytes
b. interneurons
c. oligodendrocytes
d. microglia
e. ependymal cells
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Question 6) In cystic fibrosis, defective chloride channels allow too many chloride ions to enter the cell, causing the cell to become hypertonic to the ECF and swell.
Indicate whether the statement is true or false
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Question 7) About 90 of the cells within the CNS are ____.
a. neurons
b. nerves
c. connective tissue
d. interneurons
e. glial cells
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Question 8) Leak channels for sodium are closed during the resting potential but open with appropriate stimulation.
Indicate whether the statement is true or false
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Question 9) What are the three functional classes of neurons in the nervous system?
a. afferent, efferent, and interneurons
b. brain, spinal, and peripheral
c. incoming, outgoing, and transitional
d. efferent, spinal, and motor
e. afferent, peripheral, and sensory
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Question 10) Dephosphorylation of the Na+-K+ pump causes three Na+ ions to move out of a cell against a concentration gradient.
Indicate whether the statement is true or false
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