Theca of follicle
Latin	theca folliculi

The theca folliculi comprise a layer of the ovarian follicles. They appear as the follicles become tertiary follicles.

The theca are divided into two layers, the theca interna and the theca externa.

The theca folliculi are responsible for the production of androstenedione, and indirectly the production of 17β estradiol, also called E2, by supplying the neighboring granulosa cells with androstenedione that with the help of the enzyme aromatase can be used as a substrate for this type of estradiol.

[edit] See also

• theca
• thecoma

[edit] External links

• Histology at BU 14805loa
• Organology at UC Davis Reproductive/mammal/ovary2/ovary5 - "Mammal, canine ovary (LM, High)"
• Organology at UC Davis Reproductive/mammal/ovary5/ovary6 - "Mammal, bovine ovary (LM, Medium)"
• UIUC Histology Subject 372 - interna
• UIUC Histology Subject 373 - externa
• Anatomy Atlases - Microscopic Anatomy, plate 13.249
• Slide at trinity.edu

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v • d • e Female reproductive system (TA A09.1-2, GA 11.1254) Adnexa Follicles/ Folliculogenesis corpus (hemorrhagicum, luteum, albicans) · Theca of follicle (externa, interna) · Follicular antrum (Follicular fluid) · Corona radiata · Zona pellucida · Membrana granulosa (Granulosa cells) Ovaries/ Oogenesis Germinal epithelium · Tunica albuginea · cortex (Cumulus oophorus, Stroma) · Medulla Fallopian tubes Isthmus · Ampulla · Infundibulum · Fimbria Ligaments Broad (components: Mesovarium, Mesosalpinx, Mesometrium contents: Round of uterus, Proper of ovary) · Suspensory of ovary · Cardinal Uterus corpus/body (Uterine cavity, Fundus) cervix/neck (External orifice, Canal of the cervix, Internal orifice) layers (Endometrium, Myometrium, Perimetrium) · Uterine horns Vulva/ mons pubis Vagina vestibular glands/ducts (Bartholin's glands/Bartholin's ducts, Skene's glands/Skene's ducts) · Fossa of vestibule of vagina · Vaginal fornix · Hymen · Orifice Labium commissures (Anterior · Posterior) · Frenulum labiorum pudendi · Labia majora · Mons_pubis · Cleft of venus · Labia minora · Vulval vestibule · interlabial sulci Clitoris Vestibular bulbs · Clitoral crura · Corpus cavernosa · Clitoral glans (Frenulum, Hood) Vestiges Wolffian (Gartner's duct, Epoophoron, Paroöphoron) · Canal of Nuck Other G-spot · Urethral sponge · Perineal sponge reproductive system navs: anat female,male/physio/dev, noncongen/congen/neoplasia, symptoms+signs/eponymous, proc