ANATOMY

Detailed explanation-1: -The parasympathetic nervous system decreases respiration and heart rate and increases digestion. Stimulation of the parasympathetic nervous system results in: Construction of pupils. Decreased heart rate and blood pressure.

Detailed explanation-2: -Once the threat is over, cortisol levels decline and the parasympathetic nervous system slows the stress response by releasing hormones that relax the mind and body while inhibiting, or slowing, many of the high energy functions of the body.

Detailed explanation-3: -Aim. Hypertension is related to abnormalities in autonomic nervous system (ANS) function, with increased sympathetic output and decreased parasympathetic tone.

Detailed explanation-4: -During a short-term decrease in blood pressure, the opposite occurs, and the autonomic nervous system acts to increase vasoconstriction, increase stroke volume, and increase heart rate.