The iris, the visible colored part of the eye, is the most anterior portion of the uvea. Shaped like a flattened doughnut, it lies between the cornea and the lens and it is continuous with the ciliary body posteriorly. It's round central opening, the pupil, allows light to enter the eye.
The Iris regulates the light, it has a hole in the middle called the Pupil which becomes smaller when the muscles in the Iris contract, and larger when they relax.
Iris
pupil
The diaphram Is What Controls How Much Light Is Released.
Fovea Centralis
The pyloric sphincter regulates the entry of chyme into the duodenum.
Pupil.
Diaphragm
the kidneys
The diaphram Is What Controls How Much Light Is Released.
Fovea Centralis
The Diaphram regulates the amount of light in the body tube
diaphragm
A diaphragm
The diaphragm regulates the amount of light that reaches the objective lens. It is also called the iris.
The name of the device that regulates the amount of fuel going into the engine of a personal watercraft is the throttle.
As resistance is defined as R=pl/A where p=resistivity of the medium l=length of the medium A=area so all these regulates the amount of resistance
Insulin is the main regulator of blood glucose.
The name of the device that regulates the amount of fuel going into the engine of a personal watercraft is the throttle.
The pyloric sphincter regulates the entry of chyme into the duodenum.