ciliary disk

disk (disk) a circular or rounded flat plate. Spelled also disc.

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articular disk  a pad of fibrocartilage or dense fibrous tissue present in some synovial joints.

Bowman's disks  flat, disklike plates making up striated muscle fibers.

choked disk  papilledema.

ciliary disk  the thin part of the ciliary body.

contained disk  protrusion of a nucleus pulposus in which the anulus fibrosus remains intact.

cupped disk  a pathologically depressed optic disk.

extruded disk  herniation of the nucleus pulposus through the anulus fibrosus, with the nuclear material remaining attached to the intervertebral disk.

gelatin disk  a disk or lamella of gelatin variously medicated, used chiefly in eye diseases.

growth disk  epiphyseal plate.

Hensen's disk  H band.

herniated disk  herniation of intervertebral disk; see under herniation.

intervertebral disks  layers of fibrocartilage between the bodies of adjacent vertebrae.

intra-articular disks  fibrous structures within the capsules of diarthrodial joints.

noncontained disk  herniation of the nucleus pulposus with rupture of the anulus fibrosus.

optic disk  the intraocular part of the optic nerve formed by fibers converging from the retina and appearing as a pink to white disk; because there are no sensory receptors in the region, it is not sensitive to stimuli.

Discus opticus (optic disk).

Placido's disk  a disk marked with concentric circles, used in examining the cornea.

protruded disk , ruptured disk herniation of intervertebral disk; see under herniation.

sequestered disk  a free fragment of the nucleus pulposus in the spinal canal outside of the anulus fibrosus and no longer attached to the intervertebral disk.

slipped disk  popular term for herniation of an intervertebral disk; see under herniation.

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ciliary disk

n.

The dark pigmented posterior zone of the ciliary body continuous with the retina at the ora serrata. Also called ciliary ring, pars plana.

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disk [disk]

a circular or rounded flat plate; often spelled disc in names of anatomic structures.

articular disk a pad of fibrocartilage or dense fibrous tissue present in some synovial joints.

Bowman's disk one of the flat plates making up a striated muscle fiber.

choked disk papilledema.

ciliary disk pars plana.

embryonic disk (germ disk) (germinal disk) a flattened round bilaminar plate of cells in the blastocyst of a mammal, where the first traces of the embryo are seen; called also embryonic or germinal area.

herniated disk see herniated disk.

intervertebral disk the layer of fibrocartilage between the bodies of adjoining vertebrae; see also herniated disk.

intra-articular d's articular disk.

Merkel's d's small cup-shaped tactile receptors in the skin that are particularly sensitive to continuous pressure.

optic disk the intraocular part of the optic nerve formed by fibers converging from the retina and appearing as a pink to white disk in the retina; there are no sensory receptors in the region and hence no response to stimuli. Called also blind spot.

ruptured disk herniated disk.

slipped disk popular term for herniated disk.