tapetum

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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.

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]

tapetum

/ta·pe·tum/ (tah-pe´tum) pl. tape´ta   [L.]
1. a covering structure or layer of cells.
2. a stratum of fibers of the corpus callosum on the superolateral aspect of the occipital horn of the lateral ventricle.

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.

tapetum

1 a carpetlike layer or covering of tissue.
2 a thin sheet of fibers covering parts of the brain and continuous with the corpus callosum.
3 the reflective part of the choroid coat of the eye in many mammals.

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]

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.

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

tapetum

pl. tapeta [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 cellulosum
a type of tapetum lucidum made of cells called iridocytes, as found in carnivores.
choroidal tapetum
see tapetum lucidum (below).
tapetum fibrosum
a type of tapetum lucidum composed predominantly of organized bundles of collagen as found in ungulates.
tapetum lucidum
the iridescent reflecting tissue layer of the choroid of some species of animals that gives their eyes the property of shining in the dark. It is characteristic of nocturnal animals and allows incident light two opportunities to stimulate the retinal receptors. Called also choroidal tapetum.
References in periodicals archive ?
Fergus understands the needs of a Tapeta surface through his duties at Wolverhampton Racecourse, and has already contributed extensively to our knowledge and understanding of the track at Newcastle.
We've resurfaced the Tapeta gallops - it (Tapeta) is now into its 10th version - and we also have six grass gallops.
Currently only four racetracks around the world feature the Tapeta surface: Tapeta Park in Tasmania, Meydan in Dubai UAE, Golden Gate Fields in Northern California and Presque Isle Downs in Pennsylvania.
Irish Flame has not done himself justice on turf in Dubai so we are trying him on the Tapeta as he works well on it.
I spent most of last winter overseas and 50% of my time this summer visiting Tapeta installations in five countries, which obviously leaves little time for training.
No worry is too small for Dickinson, who, along with his girlfriend and training partner Joan Wakefield, built Tapeta Farm with both turf and all-weather composite running surfaces that include uphill gallops for stamina building.
A key driver behind the decision to switch Flat racing from turf to tapeta was the desire to seek additional fixtures for Newcastle Racecourse.
The removal of the track's Tapeta surface began soon after this year's Dubai World Cup and the new dirt track is expected to be ready in time to host its first race meeting of the new season the following Thursday.
Winner of last year's UAE 1000 Guineas, over 1m on Tapeta, the 4yo filly returned this season with an impressive victory in the Al Rashidiya Trial on the first night of the Carnival.
Monday's other workouts were turned in by Wood Memorial winner Tapit, who went 5 furlongs without an official clocking on an all-weather surface at trainer Michael Dickinson's Tapeta Farm in Maryland; Fountain of Youth winner Read the Footnotes (4 furlongs in 47 3/5 at Churchill), and Hollywood Futurity winner Lion Heart (4 in 47 4/5 at Churchill).
We need to trust that the majority of the stats hold up, however, even though the track has been realigned for the Tapeta surface.
MARK Johnston landed the feature race with Turbine on a landmark day at Newcastle as the track staged its first meeting on the new Tapeta surface.