Question

Afferent and efferent neurons are also known as ______________.
(a)Sensory neurons
(b)Motor neurons
(c)Both A and B
(d)Association neutrons

Answer 1

Hint: Afferent neurons transmits impulses from the receptors in sense organ to brain whereas efferent neurons carry messages from the brain or spinal cord to muscles throughout the body.

Complete answer:
Based on the conduction direction neutrons is divided in -
Afferent neurons: Also known as sensory neurons. This conveys information from tissues and organs into the central nervous system. Input from sensory organ to the brain and spinal cord.
Efferent neurons: Also known as motor neurons which carry nerve impulses away from the central nervous system to effectors such as muscles or glands. Output from the brain and spinal cord to the muscles telling a person to move their hand from the source of pain.

Additional Information: -Dendrites are extensions that carry impulses toward the cell body and are referred to as afferent fibers.
-Afferent fibers effectively increase the surface area of a neutron to increase its ability to communicate with other neurons.
-According to the target neurons, motor neurons are classified into three broad categories- somatic motor neurons, special visceral motor neurons, and general visceral motor neurons.
-Interneuron also called relay neutron or local circuit neuron which connects afferent neurons and efferent neurons in the neural pathway.

So, the correct answer is, ‘both A and B.’

Note: There are three types of neurons- motor neurons, sensory neurons and associative neurons.
-Motor neurons carry signals from the central nervous system to the peripheral parts like muscle, skin, glands etc of the body. These neurons have long axons.
-Sensory neurons carry signal from the peripheral parts of the central nervous system. They transmit impulses from the receptor in our sense organ to the brain.