Question

What is the difference between efferent nerves and afferent nerves?

Answer 1

Hint: Efferent nerves are nerves which carry the information from the central neural system to organs/ muscles, whereas the afferent nerves are the nerve which carries the information from the organ to the central neural system.

Complete answer:

Afferent nerves	Efferent nerves
They are also called sensory nerves.	They are called motor nerves.
The afferent nerve fibres transmit impulses from organs/tissues to the central neural system.	The efferent fibres transmit regulatory impulses from the central neural system to the concerned peripheral organs/tissues.
They are found in the sense organs. (outside the CNS)	They are found in the brain and spinal cord. (inside the CNS)
It comprises long dendrite and short axons.	It comprises short dendrite and a long axon.
The shape of the cell body is round and smooth and present in dorsal root ganglia.	The shape of the cell body is generally of satellite type and it is present in the grey matter of the spinal cord.
Afferent neurons are unipolar	Efferent neurons are multipolar.
Through Dorsal root, afferent nerves enter spinal cord	Through the ventral root, the efferent nerves enter spinal cord

Note:
The human neural system is divided into two parts that are,
> Central neural system (CNS) – brain and spinal cord
> Peripheral neural system (PNS) – all the nerves of the body that associated with CNS
The PNS are divided into two divisions – somatic neural system and autonomic neural system.
The nerves fibres of the PNS are of two types that are afferent fibres and efferent fibres.