2 We only see part of the eyeball, although the whole eye is as big as a table tennis ball. Light enters the eye through the pupil(瞳孔)and passes through the lens. The lens focuses the light onto the retina at the back of the eye. The retina sends the signal to the brain along ...
2.(Law)civil lawScots lawa boy under 14 or a girl under 12 who is in the care of a guardian [C14: from Latinpupillusan orphan, frompūpusa child] pupil (ˈpjuːpəl) n (Anatomy) the dark circular aperture at the centre of the iris of the eye, through which light enters ...
1. The dilatator pupillas of the human iris consists of a thin stratum of radially disposed, riband-shaped, plain muscle-cells: this stratum covers the posterior surface of the iris-stroma. 2. At the peripheral zone of the iris the dilatator is somewhat thickened, and its cells, in ...
The iris is the colored tissue at the front of the eye that has the pupil in the center. The iris aids in regulating the size of the pupil that controls whether the eye will get more or less light.Answer and Explanation: No, the iris is not part of the sclera. The only other part...
iris (ˈaɪrɪs) n,plirisesorirides(ˈaɪrɪˌdiːz; ˈɪrɪ-) 1.(Anatomy) the coloured muscular diaphragm that surrounds and controls the size of the pupil 2.(Plants) Also called:fleur-de-lysany plant of the iridaceous genusIris,having brightly coloured flowers compo...
试题来源: 解析 The iris (plural: irides, in this context) is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupils and the amount of light reaching the pupil. "Eye co... 反馈 收藏 ...
Aside from relative size, several specific features of the eye are also neotenous. The sclera is the white part of the eye, the pupil is the dark central circle, and the iris is the surrounding colored ring. Eyes may also contain a limbal ring, which is a thin, darker band on the ou...
Iris a part of the anterior portion of the eye in animals and man that is located between the vitreous and anterior chambers. The iris is a thin and movable diaphragm with a pupillary aperture in the center; light is regulated through the pupil and onto the retina by the contraction and ...
pupil (of the eye) 眸() 也可见: 瞳孔 ▾ 外部资源(未审查的) [...] at least a portion of the irisandpupil of theperson’s eye; illuminating an eye, of an unidentified person having an iris and a pupil; obtaining at least one image of at least the same portion of the irisandpup...
aThe first action of Preprocessing is to determine iris edges include inner (with pupil) and outer (with sclera) edges.Iris can be introduced as follows:a diaphragm with rich texture encircling a circular region (pupil). Both the inner boundary and the outer boundary of a typical iris can ap...