choked 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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choked disk (chkt)

n.

See papilledema.

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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.

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choked disk

Ophthalmology Papilledema with swelling of the optic nerve head, caused by ↑ intracranial pressure with edema-induced blurring of the disk margins and obliteration of the optic cup, elevation of the nerve head, capillary congestion, hyperemia, venous engorgement, loss of venous pulse, peripapillary exudates, retinal wrinkling, and punctate nerve fiber layer hemorrhage; if pressure is reduced, fundus returns to normal without loss of vision; ↑ intracranial pressure is due to meningoencephalitis, hemorrhage, metabolic disease, toxins, trauma, tumors. See Pseudotumor cerebri.