22
Question
The adjustment of the size of
The adjustment of the size of
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Solution
The correct option is B pupil
Pupil is an aperture at the centre of iris. The size of this aperture increases and decreases depending on the intensity of light. In dim light the pupil is dilated, while in bright light it is constricted. The size of the pupil is regulated by the activity of radial and circular muscles of iris. Contraction of circular muscles decreases the size of the pupil and contraction of radial muscles increases the size of the pupil.
Pupil is an aperture at the centre of iris. The size of this aperture increases and decreases depending on the intensity of light. In dim light the pupil is dilated, while in bright light it is constricted. The size of the pupil is regulated by the activity of radial and circular muscles of iris. Contraction of circular muscles decreases the size of the pupil and contraction of radial muscles increases the size of the pupil.
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