Chamber, posterior
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  Chamber, posterior



Chamber, posterior

   The space in the eye behind the iris and in front of the lens. The iris is the colored ring of tissue that regulates the amount of light entering the eye by adjusting the size of the pupil. The lens is the transparent biconvex body in the eye that refracts light.

RELATED TERMS
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Iris
The colored part of the eye with a hole (pupil) in the center. It regulates the amount of light entering the eye – the dimmer the lighting the more light the iris lets into the eye by widening the pupil.

Lens
The lens of the eye is like an adjustable lens of a camera and focuses light rays on to the retina for sharp images. A condition called presbyopia occurs when the lens is no longer able to adjust for objects at different distances.

Tissue
Biological tissue is a group of cells that perform a similar function.The study of tissues is known as histology, or, in connection with disease, histopathology.The classical tools for studying the tissues are the wax block, the tissue stain, and the optical microscope, though developments in electron microscopy, immunofluorescence, and frozen sections have all added to the sum of knowledge in the last couple of decades.

Pupil
A circular opening in the center of the iris. The size of the pupil changes according to the amount of light present. It is small in sunlight and large in a dark room.



SIMILAR TERMS
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Chamber, anterior
The space in the eye that is behind the cornea and in front of the iris.

Chambersburg Health Service
The Chambersburg Health Service is a hospital in Chambersburg, Pennsylvania, United States.

Chambersburg Hospital
Chambersburg Hospital is a hospital in Chambersburg, Pennsylvania (USA).

Chamomile
An herb often used in the form of a tea as a sedative.

Champlain Valley Physician's Hospital
Champlain Valley Physician's Hospital is a hospital in Plattsburgh, New York (USA).



PREVIOUS AND NEXT TERMS
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Cervix, incompetent
A cervix that is abnormally liable to dilate and so is not competent to hold the fetus and keep it from being spontaneously aborted (miscarried).

CF
Cystic fibrosis, one of the most frequent and serious genetic diseases, CF affects the exocrine glands and is characterized by the production of abnormal secretions, leading to mucous build-up.

CFTR
Cystic fibrosis conductance regulator. Mutations in the gene for CFTR are responsible for cystic fibrosis. The CFTR gene is located on chromosome 7.

Chain-termination codon
A set of three adjacent bases in the DNA or their complementary bases in messenger RNA that specifies the end of a polypeptide chain.

Chamber, anterior
The space in the eye that is behind the cornea and in front of the iris.

Chamber, posterior

Chamomile
An herb often used in the form of a tea as a sedative.

Chandipura virus
A virus that causes fever, symptoms similar to those of flu, and acute encephalitis (inflammation of the brain).

Change, single base
A change in which a single base in the DNA differs from the usual base at that position. These single base changes are also called SNPs or "snips."

Channelopathy
A disease involving dysfunction of an ion channel. Channelopathies are known that involve the ion channels for potassium, sodium, chloride and calcium. There are also channelopathies involving the acetylcholine receptor, the glycine receptor, and other receptors. Each channelopathy can play a role in a number of different diseases. For example, the calcium channelopathies include familial hemiplegic migraine, malignant hyperthermia (a rare but often fatal genetic condition during anesthesia), episodic ataxia type 2, spinocerebellar ataxia type 6, hypokalemic periodic paralysis type I, central core disease (a cause of the floppy baby syndrome), congenital night blindness and stationary night blindness.

Chaperone
Any protein that is required for the proper folding or assembly of another protein or protein complex without being a component of the final structure.

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