Urogenital sinus
Urogenital Sinus
The Urogenital Sinus (pronounced: yoo-roh-JEN-i-tl SIGH-nus) is a part of the human body that plays a crucial role in the development of the urinary and reproductive systems.
Etymology
The term "Urogenital Sinus" is derived from the words "uro" which refers to urine, "genital" which pertains to the reproductive system, and "sinus" which is a cavity within a bone or other tissue.
Definition
The Urogenital Sinus is an embryonic structure in mammals, from which the urinary bladder, urethra, and parts of the genital tract develop. It is formed by the division of the Cloaca by the Urorectal Septum during the fourth to seventh weeks of embryonic development.
Related Terms
- Cloaca: The common cavity into which the intestinal, urinary, and genital canals open in birds, reptiles, amphibians, and many fishes.
- Urorectal Septum: The structure that divides the cloaca into the primitive urogenital sinus and the rectum in the developing embryo.
- Urinary Bladder: A hollow muscular organ that collects urine from the kidneys before disposal by urination.
- Urethra: The duct by which urine is conveyed out of the body from the bladder.
- Genital Tract: The pathway from the ovaries to the external genital orifice in females and from the testes to the external genital orifice in males.
See Also
External links
- Medical encyclopedia article on Urogenital sinus
- Wikipedia's article - Urogenital sinus
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