Atlas de Anatomia do Corpo Humano - Central

The atlas of human body

Eye
Eye

Eyelids
Eyelids

Eyelashes
Eyelashes

The hairs which project from the edges of the EYELIDS.

Oculomotor Muscles
Oculomotor Muscles

The muscles that move the eye. Included in this group are the medial rectus, lateral rectus, superior rectus, inferior rectus, inferior oblique, superior oblique, musculus orbitalis, and levator palpebrae superioris.

Amacrine Cells
Amacrine Cells

INTERNEURONS of the vertebrate RETINA. They integrate, modulate, and interpose a temporal domain in the visual message presented to the RETINAL GANGLION CELLS, with which they synapse in the inner plexiform layer.

Retinal Bipolar Cells
Retinal Bipolar Cells

INTERNEURONS of the vertebrate RETINA containing two processes. They receive input from the VERTEBRATE PHOTORECEPTORS and send output to the RETINAL GANGLION CELLS. The bipolar cells also make lateral connections in the retina with the RETINAL HORIZONTAL CELLS and with the AMACRINE CELLS.

Photoreceptors
Photoreceptors

Cells specialized to detect and transduce light.

Rods (Retina)
Rods (Retina)

One of the two photoreceptor cell types of the vertebrate retina. In rods the photopigment is in stacks of membranous disks separate from the outer cell membrane. Rods are more sensitive to light than cones, but rod mediated vision has less spatial and temporal resolution than cone vision.

Cones (Retina)
Cones (Retina)

One of the two photoreceptor cell types in the vertebrate retina. In cones the photopigment is in invaginations of the cell membrane of the outer segment. Cones are less sensitive to light than rods, but they provide vision with higher spatial and temporal acuity, and the combination of signals from cones with different pigments allows color vision.

Optic Disk
Optic Disk

The portion of the optic nerve seen in the fundus with the ophthalmoscope. It is formed by the meeting of all the retinal ganglion cell axons as they enter the optic nerve.

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.

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