On the basis of pathways, how many types of nerves are there ?
A. On the basis of pathways followed, nerves are classified mainly into three different
types. They are : 1) Afferent Neurons, 2) Efferent Neurons, 3) Association Nerves.
1) Afferent Neurons: They carry messages towards the central nervous system (brain or spinal cord) from nerve endings on muscles of different sense organs that sense the change in surroundings are called stimulus detectors. These are also called ‘sensory’ nerves.
2) Efferent Neurons : They carry messages from the central nervous system to the parts that shall carry out the responses. They are also called “motor” nerves.
3) Association Nerves : They link together the afferent and efferent nerves.