Nervous tissue is found in the brain, spinal cord, and nerves and is responsible for communication. There are two main cell types that make up nervous tissue: neurons and neuroglia. Neurons are excitable cells that are responsible for sending and receiving messages by converting stimuli into electrical signals called nerve action potentials, which they conduct to other neurons, muscles, or glands. Neuroglia provide support and nutrients to neurons.

1. NERVOUS TISSUE
By:
Dr Sarita Sharma
Associate Professor
MMCP, MMDU

2. Nervous tissue found in brain , spinal
cord and nerves and is responsible for
communication.
There are two main cells that make nervous
tissue
1. Neurons :- Excitable cells
2. Neuroglia :- Non excitable cells

3. 1. NEURONS:-
Neurons are responsible for sending and
receiving massages.
2. Neuroglia :-
Neuroglia provied support and nutrient for
neurons.

5. NEURONS
for processing , transfer and storage
of information.
Neurons are sensitive to various
stimuli
It converts stimuli into electrical
signals called nerve action potential. And it
conduct these action potential to other
neurons , to muscle tissue or to glands

6. • Most neurons consist of
a) A cell body
b) to kinds of cell processes such as:
i. Dendrites and
ii. Axons.

7. A cell body
A cell body contains nucleus and others
organelles
DENDRITES :-
Are tapering , highly branched and usually
short cell processes ( extensions ). They are the
major receiving and input portion of neuron.
AXON :-
the axon of a neuron is a singal thin cylindrical
process that may be very long . It is the output
portion of a neuron, conducting nerve impulses
toward another neuron or to some other tissue.

10. NEUROGLIA
For support , regulation and protection of
neurons
• CNS neuroglia:
• astrocytes
• oligodendrocytes
• microglia
• ependymal cells

11. • PNS neuroglia:
• Schwann cells (neurolemmocytes)
• satellite cells