theca

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Related to Thecal cells: Granulosa cells

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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

the·ca

n. teca, envoltura o capa que actúa esp. como protectora de un órgano.
English-Spanish Medical Dictionary © Farlex 2012
References in periodicals archive ?
MMP-2 and MMP-9 activities increase during the later period of follicular development and these increments are along with follicular remodeling of granulosa and thecal cells (8).
Androgen synthesis predominantly takes place in thecal cells which have LH receptors and subsequent signaling and activation of CYP17 enzyme convert pregnenolone and progesterone to dehydroepiandrosterone (DHEA) and androstenedione, respectively.
Medina, "Insulin stimulates testosterone biosynthesis by human thecal cells from women with polycystic ovary syndrome by activating its own receptor and using inositolglycan mediators as the signal transduction system," The Journal of Clinical Endocrinology and Metabolism, vol.
damage to convoluted seminiferous tubules epithelium, reduction of spermatozoa formation and increase in prevalence of teratospermia, atrtic follicles congestion in stromal tissue, decrease in follicle and oocyte number, increased level of Cr(VI) in blood, increased duration of estrus cycle, disintegrated cell membranes of two layered follicular cells and altered villiform mitochondria in thecal cells (Li et al., 1999; Murthy et al., 1996; Elbetieha and Al-Hamood, 1997).
Various experimental cell culture studies involving human and some animal species have shown that thyroid hormones have, to some degree, a stimulatory effect on granulosa and/or thecal cells (1-3).
LH supports thecal cells in the ovary, which provide androgens and hormonal precursors for estradiol production.
RC: renal corpuscle; RP: red pulp; WP: white pulp; L: Leydig cells; ST: seminiferous tubule; OC: oocyte; G: granulosa cells; T: thecal cells. All the images are reduced by 70% compared to the original ones.
FF contains several blood plasma protein components derived from constituents that cross the blood-follicular barrier and several granulosa/theca proteins derived from granulosa and thecal cells (Nandedkar et al., 1992; Fortune, 1994).