The figure illustrates events at a chemical synapse. What does "B" represent?
A) Postsynaptic membrane
B) Synaptic cleft
C) Synaptic vesicle
D) Voltage-gated Ca²⁺ channel
E) Presynaptic terminal

Chemical Synapse

A type of synapse at which a chemical (neurotransmitter) is released from the axon terminal of a neuron into the synaptic cleft between neurons, facilitating neural communication.

Synaptic Cleft

The tiny gap between two neurons, across which neurotransmitters travel to transmit nerve impulses.

Voltage-Gated Channel

A type of ion channel that opens or closes in response to changes in the electrical potential across a cell membrane.