Short note on :Sympathetic nervous system.

1.	Short note on :Sympathetic nervous system.
Answer» 1. Sympathetic Nervous System is formed by 22 pairs of sympathetic ganglia. These ganglia are linearly arranged on two sympathetic cords. Sympathetic nerve cords run on either side of the vertebral column. 2. Sympathetic nerve cords are connected to CNS by rami communicans of spinal nerve fibres. 3. This system works during stress, pain, anger, fear or emergency. It is supposed to bring about fight, flight or fright reactions. 4. Action of sympathetic nervous system is dependent on adrenaline or noradrenaline. This neurotransmitter is secreted by sympathetic nervous system as an emergency hormone

Answer»

1. Sympathetic Nervous System is formed by 22 pairs of sympathetic ganglia. These ganglia are linearly arranged on two sympathetic cords. Sympathetic nerve cords run on either side of the vertebral column.

2. Sympathetic nerve cords are connected to CNS by rami communicans of spinal nerve fibres.

3. This system works during stress, pain, anger, fear or emergency. It is supposed to bring about fight, flight or fright reactions.

4. Action of sympathetic nervous system is dependent on adrenaline or noradrenaline. This neurotransmitter is secreted by sympathetic nervous system as an emergency hormone

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