HUMAN ANATOMY & PHYSIOLOGY LAB MANUAL>
HUMAN ANATOMY & PHYSIOLOGY LAB MANUAL>
5th Edition
ISBN: 9781323510865
Author: Marieb
Publisher: PEARSON C
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Chapter 15, Problem 4MC
Summary Introduction

To determine:

Sympathetic nervous system upon activation causes:

(a) Contraction of the sphincter pupillae muscles

(b) Contraction of the dilator pupillae muscles

(c) Contraction of the ciliary muscles

(d) A decrease in ciliary zonule tension.

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