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Urogenital sinus
Urogenital sinus In embryology, an elongated sac or funnel that precedes the differentiation of the external genitalia. In some types of hermaphroditism its differentiation fails to reach completion so that it constitutes a birth defect of the external genital orifice(s).
RELATED TERMS--------------------------------------
Differentiation
The process whereby an unspecialized early embryonic cell or stem cell acquires the features of a specialized cell, such as a heart, liver, or muscle cell.
Genitalia
The sex organs, internal and external. The word is often used to refer to the external organs only.
Hermaphroditism
Having genital attributes of both sexes. Some invertebrates are simultaneous hermaphrodites, and some fish are sequential hermaphrodites that change from male to female, or vice versa, once or more often in the course of a lifetime. In the human species, hermaphroditism is a form of birth defect, also known as intersexuality. It is defined as male or female hermaphroditism, if only testes or ovaries are present, respectively; as true hermaphroditism if both tissues are found as in ovotestes, and as gonadally dysgenic [dysgenetic?] when neither tissue is clearly differentiated. Human hermaphrodites do not have the complete sex organs of both sexes. A congenital condition of ambiguity of the reproductive structures so that the sex of the individual at birth is not clearly defined as exclusively male or exclusively female. The condition is named for Hermes and Aphrodite, the Greek god and goddess of love.
Genital
Having to do with the sex organs.
SIMILAR TERMS--------------------------------------
Urogenital
Pertaining to both the urinary and genital structures; genitourinary.
PREVIOUS AND NEXT TERMS--------------------------------------
Urethralism
The condition or activity of achieving sexuoerotic arousal through stimulation of the urinary urethra by means of insertions of rubber cathethers, rods, objects, fluids, ballbearings, and even long flexible cathether-like electrodes ("sparklers"). This activity may be part of a paraphilic rubber catheter fetish, a sadomasochistic repertory, sexuoerotic experimentation and variety, or activity the result of anatomic ignorance as urethral intercourse has been described wherein a case of infertility was due to the insertion of the husband's penis into the wifes urethra rather than the vagina.
Urethroplasty
Plastic surgery to construct an artificial urinary canal or urethra in a penis so as to correct a birth defect or an injury.
Urinary fistula
An abnormally located opening of the urinary passageway, as when the two edges of a surgical repair fail to join along their full length.
Urethral stricture
Contraction or closure of the urethra, as when scar tissue contracts following urethral surgery.
Urogenital
Pertaining to both the urinary and genital structures; genitourinary.
Urogenital sinus
Ungual
Having to do with the nails.
Uremia
The buildup in the blood of substances normally eliminated in the urine.
Ureter
A narrow tube that transfers urine from the kidney to the bladder.
Urinary bladder
The organ that serves as a temporary storage place for urine. Also called the bladder.
Uvula
The fleshy mass hanging down from the soft palate above the back of the tongue.
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