GENERAL HISTOLOGY

Detailed explanation-1: -Interneuron is the neuron that connects the sensory neuron and the motor neuron. They are present in the central nervous system. It collects sensory impulses and processess them to generates quick responses.

Detailed explanation-2: -Sensory cells carry input from the receptor (afferent impulses) to a central interneuron, which makes contact with a motor neuron. The motor neuron carries efferent impulses to the effector, which produces the response.

Detailed explanation-3: -Most reflex arcs involve only three neurons. The stimulus, such as a needle stick, stimulates the pain receptors of the skin, which initiate an impulse in a sensory neuron. This travels to the spinal cord where it passes, by means of a synapse, to a connecting neuron called the relay neuron situated in the spinal cord.

Detailed explanation-4: -The interneuron is found in the spinal cord and connects the afferent (sensory) neuron to the appropriate efferent (motor) neuron(s) in order to coordinate a response to the stimulus.