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Ciliary muscles are which Or Ciliary...

Ciliary muscles are which
Or
Ciliary mucles are contractile structure which

A

Move cilia of some protozoans

B

Keep valves of heart intact

C

Change focal length of human eye and are found at joint of sclera and iris

D

Cause eretion of human hairs in cold and are situated ini skin

Text Solution

Verified by Experts

The correct Answer is:
C
Ciliary muscles by their contraction exerts tension tension over the zonule, the ligament which suspends the lens and stretch or relax the lens capsule. The lens has elasticity and hence change of tension on it changes the focal length of lens.
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