Question

The small space between the sending neuron and the receiving neuron is the:

(a) Synaptic cleft
(b) Synaptic terminal
(c) Calcium channel
(d) Neurotransmitter

Answer 1

The small space between the sending neuron and the receiving neuron is called the synaptic cleft. It is a narrow gap where neurotransmitters diffuse from the presynaptic element to the postsynaptic element.

Step-by-step explanation:

The small space between the sending neuron and the receiving neuron is called the synaptic cleft. It is a narrow gap between the pre- and postsynaptic cells, about 20 nm wide, where neurotransmitters diffuse from the presynaptic element to the postsynaptic element. The synaptic cleft is an important site where communication between neurons occurs, as neurotransmitters released into the cleft travel across it and bind with receptors on the dendrite of the adjacent neuron.