intervertebral disk

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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

intervertebral disk


intervertebral disc

A broad disk of fibrocartilage situated between adjacent vertebrae of the spinal column.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

Intervertebral disk

Cylindrical elastic-like gel pads that separate and join each pair of vertebrae in the spine.
Mentioned in: Disk Removal
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
We consider that the values we obtained are more reliable in reference to dimensional ratios between the vertebral-disk elements than the ones obtained by the old formula, namely the direct ratio of the intervertebral disk height and the corresponding vertebral body height.
Case-control study of the risk factors of lumbar intervertebral disk herniation in 5 northern provinces of China.
--presence of root and neurogenic pains caused by recurrent hernia of the intervertebral disk or spinal channel degenerative stenosis without effect of conservative therapy
Benign notochordal cell tumor, chordomas, notochordal vestiges of the intervertebral disk, and ecchordosis physaliphora are all lesions of notochordal origin that share similar histologic and immunohistochemical characteristics.
Therefore, it was shown that the flexion of the trunk could determine the weakening of the fibrous ring if the tension is mainly localized in the posterior side of the intervertebral disk. Also, if the length of the ring fibres increases by 4%, the ring will be deteriorated.
The volume concludes with some discussions of likely future developments in such areas as intervertebral disk repair and restoration of spinal cord function.
The study included 22 healthy volunteers (mean age, 34 years; weight 67 kg; height 169 cm) with no history of back pain or surgery who underwent measurements of lumbar lordosis angles, intervertebral disk heights, and translation of the nucleus pulposus using a 0.6-tesla whole-body, positional MRI scanner.
Haglund, "Inflammatory mediators in intervertebral disk degeneration and discogenic pain," Global Spine Journal, vol.
AKU is caused by the deficiency of the homogentisate 1,2-dioxygenase enzyme which results in excretion of large quantities of homogentisic acid (HGA) in the urine and a slowly progressive deposition of HGA and its oxidative product in cartilage, intervertebral disk and other connective tissues, leading to ochronotic arthropathy.