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Apr 11, 2024 · iris, (genus Iris ), genus of about 300 species of flowering plants, including some of the world’s most popular and varied garden flowers. The diversity of the genus is centerd in the north temperate zone, though some of its most handsome species are native to the Mediterranean and central Asian areas.
Feb 20, 2022 · What is the iris of the eye? The iris is the colored part of your eye. Muscles in your iris control your pupil — the small black opening that lets light into your eye. The color of your iris is like your fingerprint. It’s unique to you, and nobody else in the world has the exact same colored eye.
Aug 8, 2022 · Anatomy. Organs. The Anatomy of the Iris. A pigmented curtain regulating the amount of light entering the eye. By Mark Gurarie. Updated on August 08, 2022. Medically reviewed by Michael Menna, DO. Print. View All. Anatomy. Function. Associated Conditions. Tests. Frequently Asked Questions.
iris, in anatomy, the colored muscular part of the eye surrounding the pupil, the small black opening in the center. The iris is located in front of the lens and behind the cornea. It is bathed in front and behind by a fluid known as the aqueous humor.
The iris ( pl.: irides or irises) is a thin, annular structure in the eye in most mammals and birds, responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina. In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm. Eye color is defined by the iris. Etymology[edit]
Feb 20, 2024 · The iris is the colored part of the human eye and a component of the uvea. Also known as the uveal layer or uvea coat, the uvea is a pigmented layer found between the retina and the sclera (white of the eye). In addition to the iris, the uvea also consists of the choroid and ciliary body.
Iris plants unfurl their stunning flowers from spring to early summer. When iris flowers appear depends on the specific types of iris and varieties. In general, dwarf bulb irises flower first in very early spring. This includes Iris danfordiae and reticulated iris (Iris reticulata ).
