The speed of an action potential in unmyelinated neurons is approximately _____ mph. The speed of an action potential in myelinated neurons is approximately ____ mph.
A) 1 to 4.5; 1 to 4.5
B) 1 to 4.5; 150 to 275
C) 150 to 275; 1 to 4.5
D) 150 to 275; 150 to 275
Correct Answer:
Verified
Q27: An advertisement for a new drug therapy
Q29: You cannot fire a gun softly or
Q30: Cocaine causes the neurotransmitter dopamine to remain
Q31: Receptor sites are found on:
A)myelin sheaths.
B)axons.
C)vesicles.
D)dendrites.
Q33: Researchers have identified approximately _ neurotransmitters.
A)20
B)50
C)100
D)200
Q34: A synapse is a:
A)chemical.
B)signal.
C)joint.
D)gap.
Q34: Which electrical charge is correctly identified?
A)-70 mV
Q35: An action potential involves the transfer of
Q36: The neurotransmitter GABA opposes the action of
Q37: A neuron's resting potential is:
A)-70 mV.
B)-55 mV.
C)0
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