tapetum

(redirected from choroidal tapetum)
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Related to choroidal tapetum: Tapetum lucidum

tapetum

 [tah-pe´tum] (L.)
1. a covering structure or layer of cells.
2. a stratum in the human brain composed of fibers from the body and splenium of the corpus callosum sweeping around the lateral ventricle.
tapetum lu´cidum the iridescent epithelium of the choroid of animals that gives their eyes the property of shining in the dark.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ta·pe·tum

, pl.

ta·pe·ta

(tă-pē'tŭm, -tă), [TA]
1. In general, any membranous layer or covering.
2. neuroanatomy a thin sheet of fibers in the lateral wall of the temporal and occipital horns of the lateral ventricle, continuous with the corpus callosum. Synonym(s): Fielding membrane, membrana versicolor
3. A dense layer in the choroidea of the eye of many mammalian species, including the cat and dog but not humans, which forms a discrete or diffuse area of reflective cells, rodlets, and fibers; its strong light-reflecting properties cause the metallic hue and light-glow of such eyes in the dark.
[L. tapeta, a carpet]
Farlex Partner Medical Dictionary © Farlex 2012

tapetum

(tə-pē′təm)
n. pl. tape·ta (-tə)
Anatomy
a. A reflective membrane in the back of the eye of many animals that are active during low-light conditions.
b. A layer of fibers of the corpus callosum forming the roof of part of the lateral ventricle of the brain.

ta·pe′tal (-pēt′l) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

ta·pe·tum

, pl. tapeta (tă-pē'tŭm, -tă) [TA]
1. In general, any membranous layer or covering.
2. [TA] neuroanatomy A thin sheet of fibers in the lateral wall of the temporal and occipital horns of the lateral ventricle, continuous with the corpus callosum.
[L. tapeta, a carpet]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

tapetum

  1. a nutritive layer surrounding those cells which will become MICROSPORES. The tapetum is found in a wide range of vascular plants, from FERNS to ANGIOSPERMS. In the latter, a tapetal layer is found in the pollen sacs of the ANTHER.
  2. a layer of specialized reflective cells in the choroid of the EYE, especially noticeable in the eyes of cats.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Fielding,

George H., English anatomist, 1801-1871.
Fielding membrane - in neuroanatomy, a thin sheet of fibers in the lateral wall of the temporal and occipital horns of the lateral ventricle, continuous with the corpus callosum. Synonym(s): tapetum
Medical Eponyms © Farlex 2012