Multiple Choice
A nerve cell membrane becomes depolarized as a result of
A) calcium leaving the nerve cell.
B) some ion channels being opened while others are closed.
C) the relative ease with which K+ diffuses into the nerve cell.
D) Na+ being prevented from passing through the membrane.
Correct Answer:

Verified
Correct Answer:
Verified
Q1: Every neuron has<br>A)many axons.<br>B)a cell body.<br>C)myelin.<br>D)a neurilemma.
Q4: Several nerve fibers converging onto one neuron
Q5: Most of the neurons in the brain
Q6: Synaptic knobs are at the ends of<br>A)axons.<br>B)dendrites.<br>C)cell
Q9: The neurotransmitter that controls skeletal muscle contraction
Q41: Sheaths of _ cells often enclose the
Q43: Nodes of Ranvier lie between neurons.
Q48: Which of the following neuroglia are not
Q63: A drug that functions as an agonist<br>A)activates
Q66: Drugs that decrease membrane permeability to sodium<br>A)