Behind the cornea and in front of the lens is the iris, the circular pigmented band around the pupil. The iris works much like the diaphragm in a camera, widening or narrowing the pupil to adjust to different light conditions.
It is made of sphincter and dilator muscles of the pupil.
The structure that controls light entry into the eye is called the iris.
the pupil
the iris
the iris controls the amount of light by limiting the volume of light admitted through the iris.
The diaphram Is What Controls How Much Light Is Released.
The size of pupil is reduced with bright light and vise verse. This is managed by reflex action. Parasympathetic nerve stimulation constricts the pupil. Sympathetic nerve stimulation dilates the pupil.
The light diaphragm
the iris
the iris controls the amount of light by limiting the volume of light admitted through the iris.
the diaphragm
stage opening
stage opening
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The answer to this microscope question is the stage opening.
The diaphram Is What Controls How Much Light Is Released.
The size of pupil is reduced with bright light and vise verse. This is managed by reflex action. Parasympathetic nerve stimulation constricts the pupil. Sympathetic nerve stimulation dilates the pupil.
The iris is the circular colored band of muscle that controls how much light enters the eye. The color of the iris is determined by genetics and heredity.
Optic nerves
The iris is the colored area in the eye and is surrounded by the sclera,the white section in the human eye.The absence of iris affect vision. Its function is important because it is responsible for regulating the amount of light that enters the eye..Too much or too little light that gets into the eye hampers vision,.It controls the amount of light that enters the eye by opening and closing the pupil.