(C) iliary muscles are smooth muscles located in the ciliary body of the eye. They control the shape of the lens by changing its curvature,which alter

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Change the focal length of the human eye and are located at the junction of the sclera and iris

(C) iliary muscles are smooth muscles located in the ciliary body of the eye. They control the shape of the lens by changing its curvature,which alters the focal length of the eye to focus on objects at varying distances. This process is known as accommodation.

Class 11 Biology Neural Control and Coordination Eye

Medium

What is the function of ciliary muscles?

A
Move cilia of some protozoans
B
Keep valves of heart intact
C
Change the focal length of the human eye and are located at the junction of the sclera and iris
D
Cause erection of human hairs in cold and are situated in the skin

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Chapter

Neural Control and Coordination

Subtopic

Eye

Match the following columns and select the correct option.

Column $I$ Column $II$

$(a)$ Rods and Cones $(i)$ Absence of photoreceptor cells

$(b)$ Blind Spot $(ii)$ Cones are densely packed

$(c)$ Fovea $(iii)$ Photoreceptor cells

$(d)$ Iris $(iv)$ Visible coloured portion of the eye

Column $I$	Column $II$
$(a)$ Rods and Cones	$(i)$ Absence of photoreceptor cells
$(b)$ Blind Spot	$(ii)$ Cones are densely packed
$(c)$ Fovea	$(iii)$ Photoreceptor cells
$(d)$ Iris	$(iv)$ Visible coloured portion of the eye