stratum

stratum, gen. strati, pl. strata (strat´um, ta; stra´tum; tI)

One of the layers of differentiated tissue, the aggregate of which forms any given structure, such as the retina or the skin. See also lamina, layer. [L. sterno, pp. stratus, to spread out, strew, ntr. of pp. as noun, stratum, a bed cover, layer]
s. aculea´tumobsolete term for s. spinosum.
s. al´bum profun´dumdeep gray layer of superior colliculus
s. basa´le 1. the outermost layer of the endometrium which undergoes only minimal changes during the menstrual cycle;basal layer; 2. s. basale epidermidis
s. basa´le epider´midisthe deepest layer of the epidermis, composed of dividing stem cells and anchoring cells.basal cell layer, columnar layer, germinative layer, palisade layer, s. basale (2) , s. cylindricum, s. germinativum;
s. cerebra´le ret´inaecerebral layer of retina
s. cine´reum collic´uli superio´risgray layer of superior colliculus
s. circula´re membra´nae tym´panicircular fibers deep to the radiate layer of the membrane that are more abundant near the periphery; not present in the pars flaccida.circular layer of tympanic membrane;
s. circula´re tu´nicae [NA] circular layer of muscular coat
s. circula´re tu´nicae muscula´ris co´licircular layer of muscular coat of colon.
s. circula´re tu´nicae muscula´ris gas´tricae [NA] circular layer of muscular coat
s. circula´re tu´nicae muscula´ris intesti´ni ten´uis [NA] circular layer of muscular coat of small intestine.
s. circula´re tu´nicae muscula´ris rec´ti [NA] circular layer of muscular coat of rectum.
s. circula´re tu´nicae muscula´ris ventric´ulicircular layer of muscular coat of stomach.
s. compac´tumthe superficial layer of decidual tissue in the pregnant uterus, in which the interglandular tissue preponderates.compacta;
s. cor´neum epider´midisthe outer layer of the epidermis, consisting of several layers of flat keratinized non-nucleated cells.corneal layer of epidermis, horny layer of epidermis;
s. cor´neum un´guisthe outer, horny layer of the nail.cornified layer of nail, horny layer of nail;
s. cuta´neum membra´nae tym´panithe thin layer of skin on the external surface of the tympanic membrane.cutaneous layer of tympanic membrane;
s. cylin´dricums. basale epidermidis
s. disjunc´tumthe layer of partly detached cells on the free surface of the s. corneum, as seen in sections under the microscope; an artifact of fixation.
s. fibro´sum [NA] fibrous articular capsule, fibrous capsule
s. functiona´lethe endometrium except for the s. basale; formerly believed to be lost during menstruation but now considered to be only partially disrupted.
s. gangliona´re ner´vi op´ticiganglionic layer of optic nerve
s. gangliona´re ret´inaeganglionic layer of retina
s. ganglio´sum cerebel´lipiriform neuron layer
s. germinati´vums. basale epidermidis
s. germinati´vum un´guisthe deeper layer of the nail that is continuous with the s. germinativum of the surrounding skin and from which the nail plate is continuously formed.germinative layer of nail;
s. granulo´sum cerebel´li [NA] granular layer of cerebellum
s. granulo´sum epider´midis [NA] granular layer of epidermis
s. granulo´sum follic´uli ova´rici vesiculo´sithe layer of small cells that forms the wall of an ovarian follicle.granular layer of a vesicular ovarian follicle, granulosa, membrana granulosa, s. granulosum ovarii;
s. granulo´sum ova´riis. granulosum folliculi ovarici vesiculosi
s. gris´eum collic´uli superio´ris [NA] gray layer of superior colliculus
s. gris´eum me´dium See gray layer of superior colliculus.
s. gris´eum profun´dum See gray layer of superior colliculus.
s. gris´eum superficia´le See gray layer of superior colliculus.
s. interoliva´re lemnis´cithe medial region of the medulla oblongata between the left and right olivary nucleus, traversed longitudinally by the left and right medial lemniscus, and transversely by the decussating olivocerebellar fibers.
s. lemnis´cia largely fibrous (hence whitish) layer of the superior colliculus separating the middle gray layer of superior colliculus from the deep gray layer of superior colliculus and containing, among others, fibers from the spinal and trigeminal lemnisci.fillet layer;
s. longitudina´le tu´nicae muscula´ris [NA] longitudinal layer of muscular coat
s. longitudina´le tu´nicae muscula´ris co´li [NA] longitudinal layer of the muscular tunic of the colon.
s. longitudina´le tu´nicae muscula´ris gas´tricae [NA] longitudinal layer of muscular coat
s. longitudina´le tu´nicae muscula´ris intesti´ni ten´uis [NA] longitudinal layer of muscular coat of small intestine.
s. longitudina´le tu´nicae muscula´ris rec´ti [NA] longitudinal layer of muscular coat of rectum.
s. longitudina´le tu´nicae muscula´ris ventric´uli [NA] longitudinal layer of muscular coat of stomach.
s. lu´ciduma layer of lightly staining corneocytes in the deepest level of the s. corneum; found primarily in the thick epidermis of the palmar and plantar skin.clear layer of epidermis;
malpighian s.the living layer of the epidermis comprising the s. basale, s. spinosum, and s. granulosum.malpighian layer, malpighian rete;
s. molecula´remolecular layer
s. molecula´re cerebel´li [NA] molecular layer of cerebellum
s. molecula´re ret´inaemolecular layer of retina
s. neuroepithelia´le ret´inaeneuroepithelial layer of retina
s. neurono´rum pirifor´mium [NA] piriform neuron layer
s. nuclea´re exter´num et inter´num ret´inaenuclear layers of retina, under layer
s. nuclea´re exter´num ret´inaeneuroepithelial layer of retina
s. nuclea´re inter´num ret´inaeganglionic layer of retina
s. op´ticumoptic layer
s. papilla´re cor´iithe more superficial layer of the corium whose papillae interdigitate with the epidermis.corpus papillare, papillary layer;
s. pigmen´ti bul´bipigmented layer of retina
s. pigmen´ti cor´poris cilia´risthe continuation of the pigment layer of the retina onto the posterior aspect of the ciliary body.pigmented layer of ciliary body;
s. pigmen´ti i´ridisthe double layer of pigmented epithelium on the posterior surface of the iris.pigmented layer of iris;
s. pigmen´ti ret´inaepigmented layer of retina
s. plexifor´me exter´num et inter´num ret´inaeplexiform layers of retina, under layer
s. radia´tum membra´nae tym´panithe connective tissue layer of the tympanic membrane beneath the stratum cutaneum, the fibers of which radiate from the manubrium of the malleus to the peripheral fibrocartilaginous ring of the membrane; absent from the pars flaccida.radiate layer of tympanic membrane;
s. reticula´re co´riithe thicker deep layer of the corium consisting of dense irregularly arranged connective tissue.reticular layer of corium, s. reticulare cutis, tunica propria corii;
s. reticula´re cu´tiss. reticulare corii
s. spino´sum epider´midisthe layer of polyhedral cells in the epidermis; shrinkage artifacts and adhesion of these cells at their desmosomal junctions gives a spiny or prickly appearance.prickle cell layer, spinous layer;
s. spongio´sumthe middle layer of the endometrium formed chiefly of dilated glandular structures; it is flanked by the compacta on the luminal side and the basalis on the myometrial side.
s. subcuta´neumsuperficial fascia
s. synovia´le [NA] synovial membrane, synovial membrane
s. zona´le [NA] zonular layer

 

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