Question

Explain the working
of ciliary Muscles, what happens if it fails to work​

Answer 1

Answer:

Ciliary muscle: A circular muscle that relaxes or tightens the zonules to enable the lens to change shape for focusing.

The zonules are fibers that hold the lens suspended in position and enable it to change shape during accommodation.

Ciliary body and the attached suspensory ligament change the shape (flattened or round) of the lens through relaxation and contraction of ciliary muscles and thereby the focal length to focus on the distant and near object. Contraction of ciliary muscles releases the suspensory ligaments and allow the lens to become round (convex) while relaxation of these muscles makes the lens taut. Since ciliary muscles are involved in accommodation required for close vision, loss of their contraction would not cause loss of vision but would affect the close vision only. The amount of light entering retina is controlled by the iris.

Explanation:

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