EVERYDAY SCIENCE

Detailed explanation-1: -The parasympathetic nervous system, also known as “rest and digest, ” can be thought of as functioning in opposition to the sympathetic nervous system. Its functions include: A decrease in heart rate and contractility of cardiac muscle. Constriction of the ciliary muscle and the pupil for near vision.

Detailed explanation-2: -The opposite response, often called, rest and digest, is known as the parasympathetic nervous system (PNS). This is the automatic response that tells the body it is safe to focus on recovery and involves lowering blood pressure, breathing rate and heart rate as well as triggering other functions like digestion.

Detailed explanation-3: -The parasympathetic nervous system is part of the body’s autonomic nervous system. Its partner is the sympathetic nervous system, which control’s the body’s fight or flight response. The parasympathetic nervous system controls the body’s ability to relax. It’s sometimes called the “rest and digest” state.

Detailed explanation-4: -The parasympathetic nervous system controls processes in the body such as digestion, repair and relaxation. When the parasympathetic nervous system is dominant in the body it conserves energy, slows heart rate, increases digestion and relaxes sphincter muscles in the digestive tract.

Detailed explanation-5: -It is called the “rest and digest” division of the ANS. The parasympathetic nervous system decreases respiration and heart rate and increases digestion.