Anatomy & Physiology
5th Edition
ISBN: 9780321861580
Author: Marieb, Elaine N.
Publisher: Pearson College Div
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Textbook Question
Chapter 13, Problem 17RQ
Which sequence of reactions occurs when a person looks at a distant object? (a) pupils constrict, ciliaryzonule (suspensory ligament) relaxes, lenses become less convex; (b) pupils dilate, ciliaryzonule becomes taut, lenses become less convex; (c) pupils dilate, ciliaryzonule becomes taut, lenses become more convex; (d) pupils constrict, ciliaryzonule relaxes, lenses become more convex.
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Select the best answer or answers from the choices given: Which reactions occur when a person looks at a distant object? (a) pupils constrict, ciliary zonule (suspensory ligament) relaxes, lenses become less convex; (b) pupils dilate, ciliary zonule becomes taut, lenses become less convex; (c) pupils dilate, ciliary zonule becomes taut, lenses become more convex; (d) pupilsconstrict, ciliary zonule relaxes, lenses become more convex.
The part of the fibrous layer of the eye that is white, tough, and opaque is the (a) choroid, (b) cornea, (c) retina, (d) sclera.
Paralysis of a medial rectus muscle would affect (a) accommodation,(b) refraction, (c) depth perception, (d) pupil constriction.
Chapter 13 Solutions
Anatomy & Physiology
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