Rayat Shikshan Sansthas S M Joshi College Hadapsar

Rayat Shikshan Sanstha's S. M. Joshi College, Hadapsar, Pune-28 Department of Psychology 2018 -2019 Prof. Shilpa Kumbhar M. A. SET, Ph. D. (Pursuing)

Neuron :

1. Nucleus � Every neuron has a centre in the middle, called as a nucleus.

2. Cell Body �The portion around the nucleus of a cell is called as the cell body. The cell body generates a food with the help of cytoplasm.

3. Axon � At one end of the cell body the long and thick fiber is found, called as an axon. Axon- Myelin Sheath

4. Dendrites � Dendrites are very fine fibers. Dendrites are highly branched like a tree and usually are quite short. They are stimulated by other neurons.

5. Axon Terminals �These are very micro fibers found at the termination point of an axon. When dendrites of a neuron are stimulated then the nerve impulses received are transmitted from Axon to axon- terminals and further are transmitted to the next- neuron.

Types of Neuron �With the help of its structure and functions, neurons can be classified into three types: 1. Sensory Neurons 2. Motor Neurons 3. Associative Neurons

A. Sensory Neurons: � Sensory Neurons accept various stimuli earlier received by various sense organs and further send them to nervous system or brain.

B. Motor Neurons They are also called as outer-neurons. The nerve impulses created in the brain or spinal cord are propagated to various muscles and glands of the body and the decisions taken by brain are carried out by motor neurons.

C. Associative Neurons �They establish correlation between interneurons and outer-neurons. To keep connection between sensory neurons and motor neurons in the important function of associative neurons.

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