short note on nervous system
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The nervous system includes both the Central nervous system and Peripheral nervous system. 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.
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Physiology of Nervous system :
- Many nerves cells forms linked structure which connects various parts of body with brain and spindal cord.
- Sensory nerves cells sends various types of stimuli towards CNS such as light , sound , touch etc
- This work is performed by electrochemical impulses also known as Nerve impulses
- It transfer stimuli from sensory organs { skin , tongue , nose , ears and eyes } to CNS
- Nerve impulses weakness as it reaches from dendrons to axon only .
- Such slow impulses are made more stronger at the junction {synapse} by neurotransmitter substance and sends further.
- Signal from central nervous system are transfereed via motar nerves and activates muscle and glands
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