Question

What is the functional unit of our nervous system? Describe it's structure....

Plzz answer

Answer 1

Nerve cells are also known as neurons. These are the primary building blocks of the nervous system in humans and animals. Its main function is transmitting and receiving electrochemical messages. They help in the transmission of sensory information to the central nervous system and the regulation and control of organs in the body.
A typical neuron consists of a cell body, dendrites, and an axon.
The cell body contains the necessary structures for keeping the neuron functional. That includes the nucleus, mitochondria, and other organelles.
Dendrites are thin structures that arise from the cell body, often extending and have many branches, giving rise to a complex "dendritic tree".
An axon is a special cellular extension that arises from the cell body and travels for a distance, as far as 1 meter in humans or even more in other species.

Answer 2

Functional unit of nervous system is neuron. Neuron has dendrites which receives the signals and passes it to the cell body. It has long extensions arising from cyton called axon that passes the impulses to the nerve ending. Around axon there a myelin sheath which acts as an insulator and doesn't allow the impulse to move anywhere.