Results 181 to 190 of about 10,623 (232)

Tapetum Corporis Callosi: Carpet of the Brain

Journal of the History of the Neurosciences, 2007
The tapetum is described by Johann Christian Rell (1759-1813). It is formed primarily by decussating fibers in the splenium of the corpus callosum that arch over the atrium of the lateral ventricle and course inferiorly in the lateral wall of the posterior, and somewhat into the temporal horns, of the lateral ventricle.
Levent, Sarikcioglu, Umut, Ozsoy, Guray, Unver   +2 more
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Ultrastructural Observations on the Tapetum lucidum fibrosum

Anatomia, Histologia, Embryologia, 1979
AbstractThe ultrastructural comparison made between the tapetum cellulosum of the cat and the tapetum fibrosum of the sheep has shown that the rods and the collagen fibrils have the same diameters and the same spatial arrangement.
R, Bortolami, E, Callegari, M L, Lucchi
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Tapetum character states: analytical keys for tapetum types and activities

Canadian Journal of Botany, 1997
The different types of tapetum found in the spermatophyta are described, along with associated characters. The characters (taken singly, pairwise, or in multiple combinations) are (i) tapetum types; (ii) cell walls, tapetum types, and loculus; (iii) tapetal cells individually, tapetum types, and loculus; (iv) number of pollen grains enveloped by ...
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Tapetum plastids ofOlea europaea L.

Protoplasma, 1981
The plastid ontogenesis inOlea europaea tapetum has been studied. Tapetum plastids start their development as proplastids and differentiate into elaioplasts. At the end of their development the tapetal cells degenerate and are substituted by roundish lipidic masses which will later form an exine coating (Pollenkitt).
E. Pacini, G. Casadoro
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Sporoderm and tapetum ontogeny in Juniperus communis (Cupressaceae). Connective structures between tapetum and microspores

Review of Palaeobotany and Palynology, 2014
The purpose of this work was to study in detail the successive stages of pollen wall development in Juniperus communis and intimate connection between the microspores and nutritive tapetum with TEM. Another goal was to clear up the mechanisms underlying the developmental processes.
Nina Gabarayeva, Valentina Grigorjeva, Svetlana Polevova   +2 more
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Spectral Reflexion Factor of the Cat's Tapetum

Nature, 1951
THE physiological function of the tapetum in the eyes of animals of nocturnal habit is uncertain. However, it may fairly be assumed that by reflecting light incident on the retina back through the layer of end-organs, the tapetum reduces in some measure the absolute threshold for vision1. Since the tapetum is coloured, spectral sensitivities determined
R, GUNTER, H G W, HARDING, W S, STILES
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THE MORPHOLOGY OF THE CAT TAPETUM LUCIDUM

Optometry and Vision Science, 1980
Tapetum lucidum is a comparatively neglected structure found in many species used in vision research. Fundus photography and light and electron microscopy were used in this study to provide more information about the macro- and microstructure of this reflectant layer. In the cat, the tapetum is a lamellar choroidal structure formed by (in cross-section)
J P, Bergmanson, W D, Townsend
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The tapetum and systematics in monocotyledons

The Botanical Review, 1998
This paper critically reviews the homologies and distribution of tapetum types in monocotyledons, in relation to their systematics. Two main types of tapetum are widely recognised: secretory and plasmodial, although intermediate types occur, such as the “invasive” tapetum described inCanna.
Carol A. Furness, Paula J. Rudall
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Fine Structure of the Bovine Tapetum Fibrosum

Anatomia, Histologia, Embryologia, 1986
SummaryThe fine structure of the tapetum lucidum of the domestic cow was studied by electron microscopy. In this ungulate the reflective layer is a tapetum fibrosum situated in the choroid and mainly restricted to the superior fundus. The tapetum is composed of a large array of fine extracellular collagen fibrils separated into lamellae by fibrocytes ...
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The tapetum inSchizaea pectinata (Schizaeaceae) and a comparison with the tapetum inPsilotum nudum (Psilotaceae)

Plant Systematics and Evolution, 1995
A combination tapetum consisting of a cellular, parietal component and a plasmodial component occurs inSchizaea pectinata. A single, tapetal initial layer divides to form an outer parietal layer which maintains its cellular integrity until late in spore wall development.
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