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Set 34 Neurons Sense Organs And Nervous Systems

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Question 1

(Multiple Choice)

Free
A current in a living cell is based on

A) a flow of electrons.
B) a flow of ions in aqueous solution.
C) a flow of ions in membrane lipids.
D) attractions among positive ions.
E) attractions among negative ions.

Answer

Question 2

(Multiple Choice)

Free
Which statement about myelin is false?

A) It is conductive.
B) It is lipid-rich.
C) It insulates the axon.
D) It is made of glial cell membranes.
E) It appears white and glistening.

Answer

Question 3

(Multiple Choice)

Free
The four functional regions of a typical neuron include all of the following except the

A) axon.
B) synaptic cleft.
C) cell body.
D) dendrites
E) presynaptic axon terminals.

Answer