ANATOMY

Detailed explanation-1: -At a chemical synapse each ending, or terminal, of a nerve fibre (presynaptic fibre) swells to form a knoblike structure that is separated from the fibre of an adjacent neuron, called a postsynaptic fibre, by a microscopic space called the synaptic cleft. The typical synaptic cleft is about 0.02 micron wide.

Detailed explanation-2: -The space between two neurons across which the impulse is transmitted by a neurotransmitter is known as synaptic cleft. The neuron that transmits the signals are known as presynaptic neurons and the neurons that receive the signal are known as postsynaptic neurons.

Detailed explanation-3: -The synaptic cleft-also called synaptic gap-is a gap between the pre-and postsynaptic cells that is about 20 nm (0.02 ) wide. The small volume of the cleft allows neurotransmitter concentration to be raised and lowered rapidly.

Detailed explanation-4: -Answer and Explanation: During the transmission of an impulse from an axon of a neuron to a dendrite of another neuron, there is a gap or space between them and it is called the synapse or synaptic gap.

Detailed explanation-5: -A synapse is a small area between two neurons where nerve impulses are transferred from axons of a presynaptic (sending) neuron to a dendrite of a postsynaptic (receiving) neuron through a neurotransmitter. It is termed the synaptic gap or synaptic cleft. A space between two neurons is a synaptic gap (synaptic cleft).