tapetum (redirected from tapetum cellulosum)

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.

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ta·pe·tum (t-ptm)

n. pl. ta·pe·ta (-t)

1. A membranous layer or region, especially the iridescent membrane of the choroid of certain mammals.

2. A layer of fibers of the corpus callosum forming the roof of part of the lateral ventricle of the brain.

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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.

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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.