ANATOMY

Detailed explanation-1: -The brain has billions of them, and they have many specialized jobs. For example, sensory neurons send information from the eyes, ears, nose, tongue, and skin to the brain. Motor neurons carry messages away from the brain to the rest of the body.

Detailed explanation-2: -Sensory neurons carry information from the sense organs (such as the eyes and ears) to the brain. Motor neurons control voluntary muscle activity such as speaking and carry messages from nerve cells in the brain to the muscles. All the other neurons are called interneurons.

Detailed explanation-3: -The afferent neuron receives signal from a sensory organ and transmits the impulse via a dorsal nerve root into the CNS (at the level of spinal cord). The efferent nueuron then carries signals from CNS to the effector. The stimulus and response thus forms a reflex arc.

Detailed explanation-4: -Sensory (or afferent) neurons: send information from sensory receptors (e.g., in skin, eyes, nose, tongue, ears) TOWARD the central nervous system.

Detailed explanation-5: -Sensory neurons carry nerve impulses from tissues and organs to the spinal cord and brain. Motor neurons carry nerve impulses from the brain and spinal cord to muscles and glands (see Figure below).