NURS 612 Chapter 12: Eyes
Maryville University Of St. Louis
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Exam (elaborations)
NURS 612 Chapter 12: Eyes
MULTIPLE CHOICE 
 
	1.	Contraction or relaxation of the ciliary body: 
a.	allows voluntary blinking. 
b.	changes lens thickness. 
c.	regulates peripheral vision. 
d.	sends light impulses to the brain. 
e.	regulates tear production. 
 
 
ANS:	B 
The lens is circularly supported by a framework of fibers from the ciliary body, and contraction or relaxation of this structure results in a change in the thickness of the lens, allowing for accommodation as needed. Voluntary blinking, peripheral vision,...