Presynaptic Inhibition Is Caused by

Multiple Choice

Presynaptic inhibition is caused by

A) inward movement of chloride, which leads to hyperpolarization.
B) outward movement of chloride, which leads to depolarization.
C) an increase in the amount of transmitter released from excitatory nerve terminals.
D) a reduction in the amount of transmitter released from excitatory nerve terminals.
E) both an inward movement of chloride, which leads to hyperpolarization and a reduction in the amount of transmitter released from excitatory nerve terminals.