The iris is like a contractile structure of smooth muscles which surround the pupil. The sphincter pupillae, one of the smooth muscles categories of the eye, causes constriction of the pupil. The dillator pupillae, the other category of smooth muscles of the eys, causes the pupil to dilate.
It can hardly be tolerated that the kweschun itself is grammatically incorrect.
the part of the eye that controls the pupil is the iris
The pupil. However, as it is a hole, i.e. an absence of anything it seems odd to say it controls anything. The iris controls the size of the pupil and therefore the amount of light entering.
The iris.
The pupil is the opening in the iris. The iris controls the amount of light entering the eye.
the iris controls the amount of light by limiting the volume of light admitted through the iris.
The iris is the layer that surrounds the pupil and controls the size and diameter of the pupil. It also controls the amount of light that reaches the pupil.
iris
the part of the eye that controls the pupil is the iris
The iris controls the size of the pupil. Which in turn, controls the amount of light entering the eye.
The Iris.
iris
The pupil. However, as it is a hole, i.e. an absence of anything it seems odd to say it controls anything. The iris controls the size of the pupil and therefore the amount of light entering.
The iris.
IrisThe circular muscles of the iris expand and contract the pupil. The size of the pupil determines how much light will enter the eye, so the iris effectively controls the amount of light that is passed to the retina. The iris is also responsible for eye color (blue, brown, green, hazel). See the related link below for more information on the iris.
The pupil is the opening in the iris. The iris controls the amount of light entering the eye.
No. The pupil can only open to the size of the iris.
it squishes it until it becomes so small that the naked eye can't see it. (he he he) (naked)