The iris is a disc-shaped diaphragm that is freely suspended within the path of light refraction in the eye. It is perforated by a central opening, the pupil , which is shifted slightly toward the nasal side. The main function of the iris is to regulate the amount of light reaching the...
The iris:The iris is a structure of the eye that is present in most mammals and birds. The function of the iris is to control the amount of light that can reach the retina by controlling the pupil diameter. The colour of the iris is what is referred to when talking abou...
What is the function of the iris diaphragm? What do eukaryotic cells have to perform specific functions? What is the function of ribosomes located within the mitochondria? An important cellular structure is the cell (plasma) membrane. Identify and explain a specific function of the cell membrane...
iris diaphragm- diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening iris diaphragm,stop- a mechanical device in a camera that controls size of aperture of the lens; "the new cameras adjust the diaphragm automatically" ...
1.A muscle that separates the chest cavity from the abdominal cavity. As the diaphragm contracts and expands, it forces air into and out of the lungs. 2.A thin, flexible disk, especially in a microphone or telephone receiver, that vibrates in response to sound waves to produce electrical ...
The iris functions as the diaphragm of the eye, controlling the pupil size, thereby regulating the amount of light that enters the eye. Constriction of the iris muscle is dependent on ambient light intensity which controls the pupillary light reflex (PLR) (Armstrong and Bell, 1968; Basbaum, ...
A motor to drive an iris diaphragm having a motor housing formed within the lens barrel to provide a light path, a stator assembly supported in the motor housing, and a rotor rotatably disposed within the stator assembly to move the iris diaphragm by a movement thereof, the rotor having a...
Snake venoms, especially of Elapidae and Hydrophiidae, have been known for centuries to produce symptoms relevant to nervous systems in the envenomed subject. As described in detail in Chapter 24 and 25, the most characteristic symptom is the paralysis o
diaphragm i. As applicable to air photogrammetry, a device for varying the amount of light passing through the lens. It is fitted behind, in front of, or between the lenses of cameras. It provides apertures of varying sizes. Any particular size is called astop, and the act of reducing th...
6. Function of the Iris: - The primary function of the iris is to regulate the size of the pupil, thereby controlling the amount of light that enters the eye. 7. Conclusion: - Since the iris is formed from the choroid and is considered an extension of it, the correct answer to the ...