GROSS ANATOMY

Detailed explanation-1: -Your parasympathetic nervous system is a network of nerves that relaxes your body after periods of stress or danger. It also helps run life-sustaining processes, like digestion, during times when you feel safe and relaxed.

Detailed explanation-2: -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-3: -The vagus nerve, named after the Latin word vagus (because the nerve controls such a broad range of target tissues – vagus in Latin literally means “wandering"), has parasympathetic functions that originate in the dorsal nucleus of the vagus nerve and the nucleus ambiguus in the CNS.

Detailed explanation-4: -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-5: -Yawning is a built-in repair circuit which activates the parasympathetic nervous system and signals rest/digest processes for body. If it doesn’t come naturally, intentionally yawning can still exercise and strengthen this connection.