AP PSYCHOLOGY

Detailed explanation-1: -It is well established that light constricts the pupil by stimulating the parasympathetic output to the constrictor pupillae muscle via the light reflex pathway, and that pupil constriction is facilitated by the concurrent inhibition of the sympathetic output to the dilator pupillae muscle (1).

Detailed explanation-2: -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-3: -Your parasympathetic nervous system can have the following effects: Eyes: It constricts your pupils to limit how much light enters your eyes. It also makes changes that can help improve your close-up vision, and causes tear production in your eyes.

Detailed explanation-4: -In contrast, parasympathetic stimulation decreases heart rate and constricts the pupils. It also increases secretion of the eye glands, increases peristalsis, increases secretion of salivary and pancreatic glands, and constricts bronchioles.