Disk (redirected from noncontained 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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disk or disc (dsk)

n.

1. A thin, flat, circular object or plate.

2. See lamella.

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Disk

A ringlike structure that fits between the vertebrae in the spine to protect the bones, nerves, and blood vessels. The outer layer is a tough, fibrous tissue, and the inner core is composed of more elastic tissue.

Mentioned in: Cervical Spondylosis, Sciatica

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disk,

n a thin, flat, circular object.

disk, abrasive,

n a disk with abrasive particles attached to one or both of its surfaces or its edge.

disk, diamond,

n a disk of steel with diamond chips bonded to its surface.

disk, garnet,

n a disk with particles of garnet as the abrading medium.

disk, Joe Dandy,

n.pr the brand name for a separating disk. See also disk, separating.

disk, lightning,

n a steel separating disk.

disk, Merkel's,

n.pr See corpuscle, Merkel's.

disk, pack,

n a set of circular magnetic surfaces mounted coaxially on a shaft for computer storage of files. Can be used for storage of serial or direct access files.

disk, polishing,

n a disk with an extremely fine abrasive; used to finish and polish a surface.

disk, safe-side,

n a separating disk with abrasive on one side only; the other side is smooth.

disk, sandpaper,

n an abrasive disk with sandpaper as the abrading medium.

disk, separating,

n a disk of steel or hard rubber.

disk, storage,

n a storage device that uses magnetic recording on flat, rotating disks.

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disk

a circular or rounded flat plate. See also intervertebral disk.

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articular disk

a pad of fibrocartilage or dense fibrous tissue present in some synovial joints. As specialized intra-articular structures they differ from articular plates in that they have nerve and blood supplies.

choked disk

papilledema.

embryonic disk

a flattish area in a cleaved ovum in which the first traces of the embryo are seen. Called also germinal disk.

disk explosion

the lesion produced by a sudden extrusion of non-degenerate nucleus pulposus from intervertebral disks into the cervical vertebral canal as a result of trauma.

germinal disk

the embryo in a hen egg.

intra-articular disk

articular disk.

olfactory disk

these develop on the ventrolateral aspects of the head early in fetal development. They deepen, are surrounded by the developing nasal processes, then break through into the oral cavity and become the nasal cavities.

slipped disk

the popular name for prolapse of the nucleus of an intervertebral disk.