theca


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Related to theca: theca folliculi

the·ca

 (thē′kə)
n. pl. the·cae (-sē′, -kē′)
A case, covering, or sheath, such as the covering of the pollen sacs of an anther or the thick cell wall of certain dinoflagellates.

[Latin thēca, case, receptacle, from Greek thēkē; see dhē- in Indo-European roots.]

the′cal (-kəl) adj.

theca

(ˈθiːkə)
n, pl -cae (-siː)
1. (Botany) botany an enclosing organ, cell, or spore case, esp the capsule of a moss
2. (Zoology) zoology a hard outer covering, such as the cup-shaped container of a coral polyp
[C17: from Latin thēca, from Greek thēkē case; related to Greek tithenai to place]
ˈthecal, ˈthecate adj

the•ca

(ˈθi kə)

n., pl. -cae (-sē).
1. a case or sheath enclosing an animal organ, structure, etc., as the horny covering of an insect pupa.
2. a sac, cell, capsule, or sporangium of a plant or mushroom.
[1655–65; < Latin thēca < Greek thḗkē case, cover, akin to tithénai to place, put]
the′cal, the′cate (-kɪt, -keɪt) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.theca - a case or sheath especially a pollen sac or moss capsule
covering, natural covering, cover - a natural object that covers or envelops; "under a covering of dust"; "the fox was flushed from its cover"
2.theca - outer sheath of the pupa of certain insects
sheath, case - an enveloping structure or covering enclosing an animal or plant organ or part
Translations

the·ca

n. teca, envoltura o capa que actúa esp. como protectora de un órgano.
References in periodicals archive ?
Intrafollicular pressure is the hydrostatic pressure of capillaries located within the theca interna.
In parallel with other assessments in this study, steroid hormones (E2 and P4) were used as a marker of granulosa and theca cell function and data showed the steroidogenic pathways were present and increased during the in vitro culture of ovarian tissue in the presence of BMP15 and FSH.
Effect of nonesterified fatty acids on bovine theca cell steroidogenesis and proliferation in vitro.
After first breeding zona radiata lacking striations, no theca cells, no granulosa cells exist (Fig.
18a Theca strongly sculptured, posterior membrane and membranes on the horns well developed (18) C.
A gel mould shaped like a honeycomb was seeded with theca cells, which grew into a structure 2 millimetres wide.
As described earlier, the preovulatory follicle produces estradiol at a very high rate, and this process requires cooperation between granulosa and theca interna cells.
If a delayed ecdysis cycle is continuing within the host cell symbiosome, then in addition to the shedding of the theca and plasma membrane, there must also be a shedding of the cell wall.
SST is attributable to theca cell fibrous tumour subtypes of ovarian sex cord-stromal tumor from WHO-2003 classification that is distinctive clinical, pathologic and radiological features, which differentiates it from other stromal tumour.
On the other hand, it is known that apoptosis can occur in at least four different follicular compartments, theca cells, mural cells, cumulus cells and in the oocyte (12) and that ovarian follicles with identical morphology have different apoptosis levels in mural granulosa and cumulus cells (25).
Increased LH leads to an increase In androgen production by the theca cells within the ovary.