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stratum germinativum |
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stratum /stra·tum/ (strat´um) (stra´tum) pl. stra´ta [L.] a layer or lamina.
stratum compac´tum compact layer of endometrium: the sublayer of the stratum functionale facing the interior of the uterus and containing the necks of the uterine glands. stratum cor´neum horny layer: the outermost layer of the epidermis, consisting of dead and desquamating cells. stratum functiona´le functional layer of endometrium: the layer of endometrium facing the uterine lumen, overlying the stratum basale; subdivided into the stratum compactum and stratum spongiosum. Its cells are cast off at menstruation and parturition. It is called the decidua during pregnancy. stratum germinati´vum germinative layer: the stratum basale and stratum spinosum of the epidermis considered as a single layer; the term is sometimes used to denote only the stratum basale. stratum granulo´sum granular layer. 1. the layer of epidermis between the stratum lucidum and stratum spinosum. 2. the layer of follicle cells lining the theca of the vesicular ovarian follicles. stratum lu´cidum clear layer: in the epidermis, the clear translucent layer just beneath the stratum corneum. stratum spino´sum spinous or prickle cell layer: in the epidermis, the layer between the stratum granulosum and stratum basale, characterized by the presence of prickle cells. stratum spongio´sum spongy layer of endometrium: the sublayer of the stratum functionale underlying the stratum compactum; it contains the tortuous portions of the uterine glands.
stratum germinativum. See stratum basale. stratum [stra´tum, strat´um] (L.) stratum basa´le the deepest layer of the epidermis, composed of a single layer of basophilic cells. Called also basal layer of epidermis. stratum cor´neum the outer horny layer of the epidermis, consisting of cells that are dead and desquamating. Called also horny layer. stratum germinati´vum 2. the lower layer of the nail, from which the nail grows; called also germinative layer. stratum granulo´sum the cell layer of the epidermis lying between the stratum lucidum and the stratum spinosum. Called also granular layer. 1. the deep layer of the cortex of the cerebellum. 2. the layer of follicle cells lining the theca of the vesicular ovarian follicle; called also granular layer. stratum lu´cidum the clear translucent layer of the epidermis, just beneath the stratum corneum. Called also clear layer. stratum spino´sum the layer of the epidermis between the stratum granulosum and stratum basalis, marked by the presence of prickle cells; called also spinous layer and prickle-cell layer.
stratum pl. strata [L.] a sheetlike mass of tissue of fairly uniform thickness; distinct layers making up various tissues or organs, as of the skin, brain, retina. stratum avasculosum the avascular stratum in the margin of the iris. stratum basale the mitotically active, basal layer of the epidermis, consisting of columnar to cuboidal keratinocytes on a basement membrane. stratum corneum the outer horny layer of the epidermis, consisting of cells that are non-nucleated, keratinized and desquamating. stratum germinativum in the epidermis, located between the stratum basale and the stratum granulosum. Together with the basal layer, called the malpighian layer. Called also germinative layer. stratum granulosum 1. the layer of cells between the stratum lucidum and the stratum spinosum of the skin, very thin and not always present. Called also the granular layer. 2. the deep layer of the cortex of the cerebellum. 3. the layer of follicle cells lining the theca of the vesicular ovarian follicle. Called also granular layer. stratum lamellatum laminae of the hoof corium. stratum lucidum the translucent layer of the skin just beneath the stratum corneum. Called also clear layer. Present in the epidermis of the planum nasale of several species and footpads of carnivores. stratum spinosum the layer of the epidermis between the stratum granulosum and the stratum basale, marked by the presence of prickle cells; called also spinous layer and prickle-cell layer. stratum tectorium the layer of horny scales claimed to exist on the surface of the horse's hoof that gives it the smooth glossy appearance. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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