Atlas de Anatomia do Corpo Humano - Central

The atlas of human body

Anterior Eye Segment
Anterior Eye Segment

The front third of the eyeball that includes the structures between the front surface of the cornea and the front of the VITREOUS BODY.

Lens, Crystalline
Lens, Crystalline

A transparent, biconvex structure of the EYE, enclosed in a capsule and situated behind the IRIS and in front of the vitreous humor (VITREOUS BODY). It is slightly overlapped at its margin by the ciliary processes. Adaptation by the CILIARY BODY is crucial for OCULAR ACCOMMODATION.

Lens Cortex, Crystalline
Lens Cortex, Crystalline

The portion of the crystalline lens surrounding the nucleus and bound anteriorly by the epithelium and posteriorly by the capsule. It contains lens fibers and amorphous, intercellular substance.

Lens Capsule, Crystalline
Lens Capsule, Crystalline

The thin noncellular outer covering of the CRYSTALLINE LENS composed mainly of COLLAGEN TYPE IV and GLYCOSAMINOGLYCANS. It is secreted by the embryonic anterior and posterior epithelium. The embryonic posterior epithelium later disappears. Capsulorhexis;

Iris
Iris

The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.

Cornea
Cornea

The transparent anterior portion of the fibrous coat of the eye consisting of five layers

Limbus Corneae
Limbus Corneae

An annular transitional zone, approximately 1 mm wide, between the cornea and the bulbar conjunctiva and sclera. It is highly vascular and is involved in the metabolism of the cornea. It is ophthalmologically significant in that it appears on the outer surface of the eyeball as a slight furrow, marking the line between the clear cornea and the sclera. (Dictionary of Visual Science, 3d ed)

Epithelium, Corneal
Epithelium, Corneal

Stratified squamous epithelium that covers the outer surface of the CORNEA. It is smooth and contains many free nerve endings.

Bowman Membrane
Bowman Membrane

A layer of acellular matrix that lies beneath the CORNEAL EPITHELIUM and above the CORNEAL STROMA. It consists of randomly arranged COLLAGEN fibers in a condensed bed of intercellular substance. It provides stability and strength to the cornea.

Ciliary Body
Ciliary Body

A ring of tissue extending from the scleral spur to the ora serrata of the retina. It consists of the uveal portion and the epithelial portion. The ciliary muscle is in the uveal portion and the ciliary processes are in the epithelial portion.

Conjunctiva
Conjunctiva

The mucous membrane that covers the posterior surface of the eyelids and the anterior pericorneal surface of the eyeball.

Anterior Chamber
Anterior Chamber

The space in the eye, filled with aqueous humor, bounded anteriorly by the cornea and a small portion of the sclera and posteriorly by a small portion of the ciliary body, the iris, and that part of the crystalline lens which presents through the pupil. (Cline et al., Dictionary of Visual Science, 4th ed, p109)

Aqueous Humor
Aqueous Humor

The clear, watery fluid which fills the anterior and posterior chambers of the eye. It has a refractive index lower than the crystalline lens, which it surrounds, and is involved in the metabolism of the cornea and the crystalline lens. (Cline et al., Dictionary of Visual Science, 4th ed, p319)

Trabecular Meshwork
Trabecular Meshwork

A porelike structure surrounding the entire circumference of the anterior chamber through which aqueous humor circulates to the canal of Schlemm.

Access also by phone or tablet.
HiDoctor Platform 2019 Centralx - All rights reserved.
Favorites
Favorites
Notes
Notes
My Edits
My Edits
Suggestions
Enviar