Question

☛ Write the all parts of Nerve Tissue and mention all functions .....
PLZ explain in briefly.

Answer 1

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The nervous system is a part of an animal that coordinates it's actions by transmitting signals to and from different parts of it's body.

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Nervous tissue also, called as neural tissue or nerve tissue is the main tissue component of nervous system.

PARTS-:

It is composed of neurons,also called nerve cells.

Neuron has a cell body,which includes the cell nucleus,and special extensions called axons and dendrites.Bundles of axons,called nerves are found throughout the body.
Axons and dendrites allow neurons to communicate,even across long distances.

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Answer 2

♦♦ HELLO ♦♦

First of all, WHAT IS NERVE TISSUE?

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Nervous tissue is the term for group of organized cells in the nervous system that controls the body movements, sends and carries signals to and from the different parts of the body.

•• There are TWO types of Nerve Tissue••

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Neurons :

Neurons are cells that can transmit signals called nerve impulses, or action potentials.

Functions:

• different types of sensory neurons can detect temperature, pressure, and light.
• Motor, or efferent neurons, send signals from the CNS to the PNS; these signals provide information to sensory neurons to “tell” them what to do

• Inter neurons connect sensory and motor neurons to the brain and spinal cord; they act as connectors to form neural circuits and are involved with reflex actions and higher brain functions like decision-making.

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Neuroglia:

Neuroglia, or glial cells, are cells that support neurons, supply them with nutrients, and get rid of dead cells and pathogens such as bacteria.

Functions:

• They provide nutrients to neurons, maintain ion balance, and remove unneeded excess neurotransmitters from the synaptic cleft.
• They form a myelin sheath around some neurons in the CNS. The myelin sheath is a fatty substance wrapped around the axons of some neurons; it provides electrical insulation.
• microglia, are small macrophage cells in the CNS that protect against disease by engulfing pathogens through phagocytosis (“cell eating”). They can also destroy infected neurons and promote the regrowth of neurons. All of the other types of neuroglia above are larger and collectively called macroglia.