The Main Role of Calcium Ions at Chemical Synapses Is

Multiple Choice

The main role of calcium ions at chemical synapses is to

A) depolarize the axon terminal of the presynaptic cell.
B) bind to neurotransmitter receptors on the postsynaptic cell.
C) cause fusion of synaptic vesicles with the plasma membrane of the axon terminal.
D) interfere with IPSPs in the postsynaptic cell.
E) diffuse across the synaptic space and enter the postsynaptic cell.