BIOLOGY [1 Mark Question Answer]

A neuron or a nerve cell is the basic structural and functional unit of the nervous system.

The neurons which carry impulses from the brain or spinal cord to the body parts are called motor or efferent neurons.

The neurons which carry impulses from the body parts to the spinal cord or the brain are called sensory or afferent neurons. For example, the optic nerve of the eye.

The path that an impulse takes in a reflex action is called a reflex arc.

Cerebellum is the odd one out as it is a part of the brain while rest three are parts of a neuron.