Question

controls
the size of pupil
​

Answer 1

Answer:

The pupil is the opening in the centre of the iris. The size of the pupil determines the amount of light, that enters the eye. The pupil size is controlled by the dilator and sphincter muscles of the iris.

The size of the pupil is controlled by the activities of two muscles: the circumferential sphincter muscle found in the margin of the iris, innervated by the parasympathetic nervous system: and the iris dilator muscle, running radially from the iris root to the peripheral border of the sphincter.The pupil is the opening in the centre of the iris. The size of the pupil determines the amount of light, that enters the eye. The pupil size is controlled by the dilator and sphincter muscles of the iris.

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Answer 2

Answer:

controls

the size of pupil

Explanation:

The size of the pupil is controlled by the activities of two muscles: the circumferential sphincter muscle found in the margin of the iris, innervated by the parasympathetic nervous system: and the iris dilator muscle, running radially from the iris root to the peripheral border of the sphincter.