The predominant action of a neuron in the central nervous system is to
a. stimulate (excite) other neurons
b. inhibit the firing of other neurons
c. either increase or decrease the excitability of other neurons and thus alter their tendency to fire
d. alter metabolic activities which take place in the nucleus of other neurons
Question 2
The processes influencing the shift in threshold potential which initiates an action potential most commonly involve (1) ; the processes leading to the propagation of an action potential along an axon involve (2)
a. (1) voltage gated ion channels; (2) chemically gated ion channels
b. (1) chemically gated ion channels; (2) voltage gated ion channels
c. (1) chemically gated ion channels; (2) chemically gated ion channels
d. (1) voltage gated ion channels; (2) voltage gated ion channels
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