Question

1. the changes in pupil size most likely happened in situation w when a person moved into a a. room with brighter light, and in a situation x when a person’s sympathetic nervous system was activated b. darker room, and in a situation x when a person’s sympathetic nervous system was activated c. room with brighter light, and in situation x when a person’s parasympathetic nervous system was activated d. darker room, and in situation x when a person’s parasympathetic nervous system was activated hint: observe that the last diagram is situation x, but the question is about situation w. this question is about opposites (the light or dark room) so you can rule out two distracters. this question also illustrates the point that concepts can be tied to other chapters or other units. thus, multiple concepts from biology 30 can be linked in one question. new to you at this time is the autonomic nervous system, figure 11.36, page 398. the sympathetic functions during emergencies, dilating the pupil so more stimuli enters the eye to assist the person in that situation. the parasympathetic functions in a “return to normal” manner and constricts the pupil as you cannot be so hypersensitive for a long period.

Explanation:

The pupil constricts in brighter light (Situation W). The sympathetic nervous system causes pupil dilation (Situation X). The parasympathetic nervous system causes pupil constriction.

Answer:

A. room with brighter light, and in a situation X when a person’s sympathetic nervous system was activated