Question

Explain about Nervous system.In detail form.​

Answer 1

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The nervous system is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. ... The central nervous system is made up of the brain and spinal cord, and the peripheral nervous system is made up of the Somatic and the Autonomic nervous systems.

~รαҡเɱσɳαɾcɦ

Answer 2

Answer:

The control and coordination in Animal controlled through the two system

1. nervous system

2. endocrine system .

let us explain about nervous system

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1...Nervous system --The nervous system is a complex network and cells that carry message from brain and spinal cord to all parts of body

➡The function of nervous system is to cordinate the activities of our body

➡it control the system for all our action ,thinking. and behaviour .

➡the nervous system helps all other system of our body to work together ..

☢The unit of Nervous system : Neuron.

Neurons system is made of spinal cells called Neuron

☸Neuron is the largest cell in the body (looks like a electric wire )

the neurons carry message in te form of electrical signals called electrical impulse or nerve impulse .

⚛A Neuron has three main components

1. cell body

2. Dendrites

3. Axon

1. Cell body -- the cell body of a neurone is like a typical animals cell which contains cytoplasm and neucleus .

2. Dendrites --The shortest fibre on the body of a neurons are called dendrites .

✡It carries impulse towards the cell body

3. Axon -- the longest fibre on the. cell body of a Neuron is called axon .it forms fine branches terminal .

It is a long uniformly thikened fibre like process of Neuron .

☮Axon is also known as nerve fibre .

☣now some other part of Neuron ..

Cyton --The cyton or cell body which contain a central neucleus and cytoplasm with characteristics deep stained particle is called neuleons granual .

Synapse --The axon passes the impulse (or message ) to another neurons through a junction called synapse )

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nurons are of of three types .

1. sensory nurons

2. motor neurons

3. relay neurons

1. sensory neurons transmit impulses from the sensory cell .towards the central nervous system

2. Motor neurons transmit impulses from the central nervous system towards the muscles cells

3 Relay neurons occurs in the central system Nervous system where they serve as links between other neurons .

,we will now explain how nerve impulses are transferred from one Neuron to another un the Nervous system

Any two neurons in the Nervous system don't join to one another completely ,there is a very ,very small gap between two neurons is known as synapse the nerve impulses are carried over this small gap between a pain of neurons by means of a chemical substance called neurotransmitter substance and synapse contact neurons and as we know the receptor in sense organ is in touch with the dendrites of sensory neurones .when stimulus act on the receptor ,a chemical reaction is set off which produces an electric impose in it .this impulse travel from the dendrites of sensory neuron the electric impulse release tiny amount of chemical substance into the synapse . this chemical substance crosses the gap and starts similar impulse in the dendrites of next Neuron that is why electrical impulse is carried to the cell body and then to the end of axon of second neurons .it can then be transfferd to a third neuron in a similar way .this process goes on till the electric impulse reaches the relay neurons in spinal cord and brain .

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➡THE ORGAN HUMAN NERVOUS SYSTEM

The main organ of the Nervous system are :Brain ,spinal cord and nerves .

✔How the Nervous system work

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when the sense organ (like ,eyes ,ears tongue ,nose , or skin )in our body is effected ,it sends the message to brain on the form of electric impulses (called nervous impulses) through the sensory neurones .the brain analyses of the concerned body part and desides the action to be taken the brain send out instructions to the muscles of the concerned to the instruction sent by the brain .

➖>in the process of complicated response (which require thinking ) both , the brain and spinal cord are involved ,but in the simple response (which don't require thinking ).the spinal cord is involved..

⏺THE PART OF NERVOUS SYSTEM ON THE BASIS OF ORGAN.

1.Central nervous system --(consisting of brain and spinal cord .

2. Peripheral nervous system .(consisting of all the Nervous of the body like cranial nervous ,spinal nervous and visceral nerves )

peripheral nervous system can be further divided into two parts

1. voluntary nervous system.

2. automatic nervous system

Explanation:

@GENIUS