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What is the opening in the middle of the iris that controls the amount of light entering the eye is called?
Wiki User
∙ 11y ago
PUPIL. It automatically becomes smaller due to contraction of Circular muscles via action of Parasympathetic nerve fibers, if light is more. And becomes bigger in size, if light is less due to contraction of the Radial muscles, via Sympathetic nerve fibers. This happens in order to protect Retina from excessive light. When there is total Solar eclipse and you go on looking at Sun, pupil will not contract and Retina gets excessive radiation from the surrounding of Sun and there by burning Retina, with permanent damage to it, causing total blindness.
Wiki User
∙ 11y ago
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What structure of a vertebrate eye controls the amount of light entering the eye?
It is called the iris. The part of a camera that serves the same purpose is also called an iris, or a diaphram. http://en.wikipedia.org/wiki/Iris_(anatomy)
What is it called when food enters the oral cavity?
The opening between the mouth and the esophagus is called the pharynx.
What is the name of the colored part of the human eye that controls the amount of light that passes through the pupil?
That part is called as iris. That makes your eyes so beautiful.
What is the opening at the edge of a forest called?
The opening of a forest is called a glade.
What is the opening to the windpipe is called?
glottis
What structure of a vertebrate eye controls the amount of light entering the eye?
It is called the iris. The part of a camera that serves the same purpose is also called an iris, or a diaphram. http://en.wikipedia.org/wiki/Iris_(anatomy)
The type of cell that controls the opening and closing of stomata is called?
guard cells
What is it called when food enters the oral cavity?
The opening between the mouth and the esophagus is called the pharynx.
What is the leaf-shaped cartilage that covers the larynx during swallowing is the?
The cartilage covering the opening of the larynx is called the epiglottis. It keeps food or liquids from entering the larynx when we swallow.
A market in which no controls the prices is called?
A market in which no one controls the prices is called
The is the colored part of the eye that narrows and widens to control the amount of light entering the eye?
The colored portion that regulates the amount of light in eye is called as iris. The hole through which light passes inside the posterior chamber is called as is called as pupil. The color of the iris changes as per color of the skin pigment. It has got circular muscles and radial muscles in it. In fight or flight responce, it is dilated through sympathetic nerve stimulation. In relaxed and stress free envirinment pupil is constricted via parasympathetic nerve stimulation.
A market in which no one controls the prices is called?
A market in which no one controls the prices is called
What is a company that controls another company?
A company that controls another company is called the parent company and the company it controls is called a subsidiary
What is the opening of a volcanos called?
The opening of a volcano is called the vent.The opening of a volcano is called a vent.
What is the opening to the lower deck on a boat called?
It is called the hatchway. If it is a round opening, it is called a scuttle. If it is a square opening it is called a hatch. Depending on the vessel and the location they can be "dogged" open.
When an employer prevents workers from entering their workplace it is called what?
When an employer prevents workers from entering their workplace it is called a lockout.
What is it called that controls what moves in and out of the cell cytoplasm?
Cell membrane controls it.Also called the plasma membrane.
