CBSE : Class X : Science : Chapter 7 : Control and Coordination : Write short notes on Human Nervous System.

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  • Published date: August 23, 2018
  • Modified date: November 16, 2018
    • Vasai East, Thane, Maharashtra

Ans : Human nervous system consists of :

1) Central nervous system : The brain and spinal chord constitutes central nervous system. They receive information from all parts of body and integrate it.

ii) Peripheral nervous system : Peripheral nervous system consists of cranial nerves arising from the brain and spinal nerves arising from the spinal chords. They facilitate communication between the central nervous system and the other part of body.

Iii) Autonomic nervous system : The organs of our body , such as the heart, intestines and stomach, are regulated by a branch of the nervous system known as the autonomic nervous system. Its of two type : sympathetic nervous system and parasympathetic nervous system. Both of these have opposite effect on gland and internal organs. For eg: Sympathetic system increases the contraction of heart while parasympathetic decreases.

iv) Nervous system performs following function:

a) Receives messages from sense organs.

b) Analyse the message and decide action.

c) Send instructions to concerned muscles.

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