2.2.2 Types of Neurone


2.2.2 Types of Neurone
There are three types of neurone:
(a)  Sensory neurone
(b)  Relay neurone (intermediate neurone)
(c) Motor neurone






Characteristics
Sensory neurone
Relay neurone
Motor neurone
Position in the body
Present in all parts of the body
Present in the brain and the spinal cord only
Present in all parts of the body
Position of cell body
In the middle of neurone
At the centre of neurone
At the end of neurone
Length of axon
Short
Very short
Long
Function
Transmits impulses from a receptor to the central nervous system
Transmits impulses from a sensory neurone to a motor neurone
Transmits impulses from the central nervous system to the effector