theca


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Related to theca: theca folliculi

theca

 [the´kah] (L.)
a case or sheath. adj., adj the´cal.
theca cor´dis pericardium.
theca folli´culi an envelope of condensed connective tissue surrounding a vesicular ovarian follicle; it is composed of an internal vascular layer (theca interna) and an external fibrous layer (theca externa).

the·ca

, pl.

the·cae

(thē'kă, thē'sē),
A sheath or capsule.
[G. thēkē, a box]

theca

/the·ca/ (the´kah) pl. the´cae   [L.] a case or sheath.the´cal
theca folli´culi  an envelope of condensed connective tissue surrounding a vesicular ovarian follicle, comprising an internal vascular layer (tunica interna) and an external fibrous layer (tunica externa) .

theca

(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.

the′cal (-kəl) adj.

theca

[thē′kə] pl. thecae,
a sheath or capsule, such as the theca cordis or pericardium.

the·ca

, pl. thecae (thē'kă, -sē)
A sheath or capsule.
[G. thēkē, a box]

theca

A casing, outer covering or sheath.

theca

  1. a sheath or case.
  2. the protective sheath surrounding the GRAAFIAN FOLLICLE.
  3. an obsolete term for ASCUS.

theca

pl. thecae [L.] a case or sheath.

theca cell
an epithelioid cell of the corpus luteum.
theca cordis
pericardium.
theca folliculi
an envelope of condensed connective tissue surrounding a vesicular ovarian follicle, comprising an internal vascular layer (theca interna) and an external fibrous layer (theca externa).
granulosa theca cell tumor
may secrete estrogen and progesterone in dogs and cause persistent or irregular estrus, alopecia, enlargement of nipples and vulva. Uterine changes range from cystic endometrial hyperplasia to pyometra.
References in periodicals archive ?
All 11 theca folliculus samples and the isolate were positive for flavivirus by RT-PCR, which was confirmed by amplicon sequencing.
Baillargeon and Nestler (39) postulated the former view as the cultured theca cells from PCOS women secrete more androgen upon insulin stimulation compared to normal cells.
Production of insulin-like growth factor-I by granulosa cells but not theca cells is hormonally responsive in cattle".
The citations from Andreae's De Christiani Cosmoxeni, Confessio, and Invitatio fraternitatis Christi (which was not published until the following year) in his tribute to Hess, Theca gladii spiritus, indicate how closely they worked together.
The creation of an artificial ovary marks the first time researchers have successfully created a three-dimensional environment that contains the three main types of ovarian cells: theca cells, granulose cells, and the eggs or oocytes.
To create the ovary, the researchers formed honeycombs of theca cells, one of two key types in the ovary, donated by reproductive-age (25-46) patients at the hospital.
Microscopic examination reveals well-circumscribed nodules of steroid hormone-producing cells, intermediate in size between luteinized granulosa cells and luteinized theca interna cells.
In vitro human theca cell studies have shown that insulin has direct stimulatory effects on ovarian steroidogenesis.
The number of proliferating and non-proliferating cells was determined for granulosa and theca cells of secondary (n=99 total) and antral (n=45 total) follicles.
9-12 Well-defined lumen separating the internal granulosa cells from the outer wall of granulosa cells encompassed by theca.
LH affects the Theca Cell but to some extend also affects the Granulosa Cell, thereby supporting the production of Estrogen.
STOCKHOLM -- Apptus, Europe's leading developer of search and content enrichment services for online directories, today announced that they will offer all users of the FAST Enterprise Search Platform to replace it with their own platform Theca at no cost for licenses.