lamella
| lamella | A thin, plate-like layer, middle lamella, the layer between the walls of two adjacent plant cells. (09 Oct 1997) |
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| lamella of bone | A concentric, circumferential, or interstitial lamella. (05 Mar 2000) |
| lamellar | 1. Arranged in thin plates or scales. Synonym: lamellate, lamellated. 2. Relating to lamellae. (05 Mar 2000) |
| lamellar bone | The normal type of adult mammalian bone, whether cancellous or compact, composed of parallel lamellae in the former and concentric lamellae in the latter; lamellar organization reflects a repeating pattern of collagen fibroarchitecture. (05 Mar 2000) |
| lamellar cataract | A cataract in which the opacity is limited to the cortex. Synonym: zonular cataract. (05 Mar 2000) |
| lamellar granule | A membrane-bound granule, 100 to 500 nm in diameter, located in the upper layers of the stratum spinosum of certain stratified squamous epithelia. Synonym: lamellar granule, membrane-coating granule, Odland body. (05 Mar 2000) |
| lamellar ichthyosis | A dry form of congenital ichthyosiform erythroderma, an autosomal recessive trait present at birth; characterised by large, coarse scales over most of the body with thickened palms and soles, and associated with ectropion; histologically, there is hyperkeratosis, a prominent granular layer in the epidermis, slight acanthosis, many mitotic figures, and normal or reduced epidermal cell turnover. See: collodion baby, harlequin foetus. (05 Mar 2000) |
| lamellar keratoplasty | Keratoplasty in which only the anterior layer of the cornea is used (not a tectonic keratoplasty). Synonym: lamellar keratoplasty, layered keratoplasty. (05 Mar 2000) |
| lamellar phase | <biochemistry> A lamellar organisation of phospholipids that are packed as a bilayer with hydrophobic acyl tails inwardly directed and polar head groups on the outside surfaces. It is this bilayer that forms the basis of membranes in cells, though in most cellular membranes a very substantial proportion of the area may be occupied by integral proteins. The triple layered appearance of membranes seen in electron microscopy is thought to arise because the osmium tetroxide binds to the polar regions leaving a central, unstained, hydrophobic region. (31 Dec 1997) |
| lamellate | Made up of thin plates or lamina. (09 Oct 1997) |
| lamellated corpuscles | Small oval bodies in the skin of the fingers, in the mesentery, tendons, and elsewhere, formed of concentric layers of connective tissue with a soft core in which the axon of a nerve fibre runs, splitting up into a number of fibrils that terminate in bulbous enlargements; they are sensitive to pressure. Synonym: corpuscula lamellosa, pacinian corpuscles, Vater's corpuscles, Vater-Pacini corpuscles. (05 Mar 2000) |
| articular lamella | The compact layer of bone on its articular surface that is firmly attached to the overlying articular cartilage. (05 Mar 2000) |
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| glandulopreputial lamella | A layer of embryonic epithelial tissue that gives rise to the prepuce. (05 Mar 2000) |
| vitreous lamella | The transparent, nearly structureless inner layer of the choroid in contact with the pigmented layer of the retina. Synonym: basal lamina of choroid, basal layer of choroid, Bruch's membrane, Henle's membrane, lamina vitrea, vitreous lamella, vitreous membrane. (05 Mar 2000) |
| ribosome-lamella complex | A cylindrical cytoplasmic inclusion composed of concentrically arranged sheets of membranes alternating with rows of ribosomes; characteristic of the hairy cell in leukaemic reticuloendotheliosis. (05 Mar 2000) |
| ground lamella | One of the lamellae of partially resorbed osteons occurring between newer, complete osteons. Synonym: ground lamella, intermediary system, intermediate lamella. (05 Mar 2000) |
| middle lamella | First part of the plant cell wall to be formed, laid down in the phragmoplast during cell division as the cell plate. Subsequently makes up the central part of the double cell wall that separates two adjacent cells, cementing together the two primary walls. Rich in pectin and relatively poor in cellulose. (18 Nov 1997) |
| circumferential lamella | A bony lamella that encircles the outer or inner surface of a bone. (05 Mar 2000) |
| concentric lamella | One of the concentric tubular layers of bone surrounding the central canal in an osteon. Synonym: haversian lamella. (05 Mar 2000) |
| cornoid lamella | A narrow vertical column of parakeratosis in the epidermal stratum corneum; characteristic of porokeratosis. (05 Mar 2000) |
| haversian lamella | One of the concentric tubular layers of bone surrounding the central canal in an osteon. Synonym: haversian lamella. (05 Mar 2000) |
| intermediate lamella | One of the lamellae of partially resorbed osteons occurring between newer, complete osteons. Synonym: ground lamella, intermediary system, intermediate lamella. (05 Mar 2000) |
| interstitial lamella | One of the lamellae of partially resorbed osteons occurring between newer, complete osteons. Synonym: ground lamella, intermediary system, intermediate lamella. (05 Mar 2000) |
| elastic lamella | A thin sheet or membrane composed of elastic fibres; distinguished from elastic membrane, which usually refers to a condensed mass of fibres, as in an artery, whereas an elastic lamella may be a looser elastic layer such as found in a vein or the respiratory tract. (05 Mar 2000) |
| enamel lamella | An organic defect in enamel; a thin, leaflike structure that extends from the enamel surface toward the dentinoenamel junction. (05 Mar 2000) |
| triangular lamella | A double fold of pia mater, enclosing subarachnoid trabeculae, between the fornix above and the epithelial roof of the third ventricle and the thalami below; at each lateral margin is a vascular fringe projecting into the choroidal fissure of the lateral ventricle; on its undersurface are several small vascular projections filling the folds of the ependymal roof of the third ventricle. Synonym: tela choroidea ventriculi tertii, tela choroidea superior, triangular lamella, velum interpositum, velum triangulare. (05 Mar 2000) |
| lamella |
gill: any of the radiating leaflike spore-producing structures on the underside of the cap of a mushroom or similar fungus a thin membrane that is one of the calcified layers that form bones thin plate
Ãâó: wordnet.princeton.edu/perl/webwn
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| lamellated bone |
one of the two types of bone composing the alveolar bone, with some lamellae roughly parallel with the marrow spaces and others forming haversian systems. Cf. bundle b.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| lamellar bone |
the normal type of adult bone, organized in layers (lamellae), which may be parallel (cancellous bone) or concentrically arranged (compact bone).
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| lamellar cataract |
a concentric opacity, broad or narrow, usually consisting of powdery white dots, affecting one lamella or zonule of an otherwise clear lens. This is the most common type of congenital cataract, and causes include hypocalcemia, hypoglycemia, galactosemia, and rubella. Called also zonular c.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| lamella |
(L. diminutive of lamina, a thin blade; pl: lamellae) A double-membrane structure, plate or vesicle that is formed by two membranes lying parallel to each other.
Ãâó: www.fao.org/docrep/003/X3910E/X3910E15.htm
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| lamella | thin plate |
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| lamella | a thin membrane that is one of the calcified layers that form bones |
| lamella | any of the radiating leaflike spore-producing structures on the underside of the cap of a mushroom or similar fungus |
| lamella | a mixture in which substances occur in distinct layers |
| lamella | with ovules on thin extensions of the placentae into a compound ovary |
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