The nerve impulse is transmitted from one neuron to the next through a gap or cleft called a synaptic gap or cleft or a synapse by a chemical process. Synapses are specialized junctions through which cells of the nervous system communicate to one another and also non-neuronal cells such as muscles and glands.

How are impulses transmitted across a synapse?

At chemical synapses, impulses are transmitted by the release of neurotransmitters from the axon terminal of the presynaptic cell into the synaptic cleft. ... Multiple cytosolic proteins including synapsin recruit synaptic vesicles to the active zone of the plasma membrane adjacent to the synaptic cleft.

How impulses are transmitted from receptor to effector?

Receptor in the skin detects a stimulus (the change in temperature). Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. ... Motor neuron sends electrical impulses to an effector. Effector produces a response (muscle contracts to move hand away).