When a person faces a scary situation, his heart beat increases. After a while, the normal condition is restored. The part of nervous system which helps in restoring normal conditions is ____________________.

When a person faces a scary situation, his heart beat increases. After

1.	When a person faces a scary situation, his heart beat increases. After a while, the normal condition is restored. The part of nervous system which helps in restoring normal conditions is ____________________.
Answer» When a person faces a scary situation, his heart beat increases. After a while, the normal condition is restored. The part of nervous system which helps in restoring normal conditions is ____________________.