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Which among the following is a function of Parasympathetic Nervous System?

Which among the following is a function of Parasympathetic Nervous System? Correct Answer Contraction of pupil

The Correct Answer is Option 4.

The nervous system of the human body is divided into three parts:

Central Nervous System:

  • It is a part of the nervous system which keeps control on the whole body and on the nervous system itself.
  • It is made up of two parts - Brain and Spinal Cord.

Peripheral Nervous System:

  • It is made up of the nerves arising from the brain and spinal cord, called cranial and spinal nerves respectively.

Autonomic Nervous System:

It is made up of some brain nerves and some spinal cord nerves.

There are two parts of the Autonomic Nervous System:

  • Sympathetic Nervous System:
    • Functions include:
      • It narrows blood vessels in the skin.
      • It increases the secretion of sweat glands.
      • It increases the blood pressure.
      • It increases the sugar level in the blood.
      • It helps in clotting of blood.
  • Parasympathetic Nervous System:
    • Functions include:
      • It increases the secretion of Saliva.
      • It creates contraction and motion in intestinal walls.
      • It widens the lumen of blood vessels except the coronary blood vessels.
      • The contraction of pupil is caused by this.

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