Corona radiata (embryology)
Human ovum examined fresh in the liquor folliculi. The zona pellucida is seen as a thick clear girdle surrounded by the cells of the corona radiata. The egg itself shows a central granular deutoplasmic area and a peripheral clear layer, and encloses the germinal vesicle, in which is seen the germinal spot.
Gray's	subject #3 39

For the structure in neuroanatomy, see Corona radiata.

The corona radiata surround an ovum or unfertilized egg cell, and consist of two or three strata (layers) of follicular cells. They are attached to the outer protective layer of the ovum, the zona pellucida, and their main purpose in many animals is to supply vital proteins to the cell.^{[citation needed]} They appear at ovulation, but may disappear eventually after fertilization.

[edit] External links

• Image at Berkeley
• Histology at BU 18404loa

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

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