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Uretra

Gikan sa Bikol Sentral na Wikipedia, an talingkas na ensiklopedya
Urethra
An uretra pig-aagihan kan ihi gikan sa pantog pasiring sa luwas kan hawak. An imahen na ini nagpapahiling nin (a) sarong pambabaying uretra asin (b) sarong panlalaking uretra.
Mga detalye
PrekursorUrogenital sinus
ArteryInferior vesical artery
Middle rectal artery
Internal pudendal artery
VeinInferior vesical vein
Middle rectal vein
Internal pudendal vein
NervePudendal nerve
Pelvic splanchnic nerves
Inferior hypogastric plexus
LymphInternal iliac lymph nodes
Deep inguinal lymph nodes
Identifiers
Latinurethra vagina; feminina (female); urethra masculina (male)
Griyegoοὐρήθρα
MeSHD014521
TA98A08.4.01.001F
A08.5.01.001M
TA23426, 3442
FMA19667
Anatomikal na terminolohiya

An uretra (gikan sa Greek οὐρήθρα – ourḗthrā) iyo an sarong tubo na nagkokonektar sa pantog pasiring sa urinary meatus para sa paghale sa ihi gikan sa hawak kan mga babayi asin mga lalaki. Sa mga tawong babayi asin iba pang mga primates, an urethra nagkokonektar sa urinary meatus sa ibabaw kan putay, kun saen sa mga marsupials, an uretra kan mga babayi nagbabawas sa urogenital sinus.[1]

Piggagamit kan mga babayi an saindang urethra solamente sa pag-ihi, alagad an mga lalaki piggagamit an saindang urethra sa pag-ihi asin ejaculation.[2] An panluwas na urethral sphincter iyo an sarong striated muscle na nagtotogot sa bakong boluntaryong kontrol sa pag-ihi.[3] An internal sphincter, binilog kan bakong boluntaryong smooth muscles sa gilid kan bladder neck asin urethra, nagreresibi nin saiyang nerve supply huli sa sympathetic division kan autonomic nervous system.[4] An internal sphincter is presente sa mga lalaki asin sa mga babayi.[5][6][7]

  1. Hugh Tyndale-Biscoe; Marilyn Renfree (30 January 1987). Reproductive Physiology of Marsupials. Cambridge University Press. pp. 172–. ISBN 978-0-521-33792-2. 
  2. Marvalee H. Wake (15 September 1992). Hyman's Comparative Vertebrate Anatomy. University of Chicago Press. pp. 583–. ISBN 978-0-226-87013-7. Retrieved 6 May 2013. 
  3. Legato, Marianne J.; Bilezikian, John P., eds. (2004). "109: The Evaluation and Treatment of Urinary Incontinence". Principles of Gender-specific Medicine. 1. Gulf Professional Publishing. p. 1187. 
  4. Chancellor, Michael B; Yoshimura, Naoki (2004). "Neurophysiology of Stress Urinary Incontinence". Reviews in Urology 6 (Suppl 3): S19–S28. PMID 16985861. 
  5. Jung, Junyang; Anh, Hyo Kwang; Huh, Youngbuhm (September 2012). "Clinical and Functional Anatomy of the Urethral Sphincter". International Neurourology Journal 16 (3): 102–106. doi:10.5213/inj.2012.16.3.102. PMID 23094214. 
  6. Karam, I.; Moudouni, S.; Droupy, S.; Abd-Almasad, I.; Uhl, J. F.; Delmas, V. (April 2005). "The structure and innervation of the male urethra: histological and immunohistochemical studies with three-dimensional reconstruction". Journal of Anatomy 206 (4): 395–403. doi:10.1111/j.1469-7580.2005.00402.x. PMID 15817107. 
  7. Ashton-Miller, J. A.; DeLancey, J. O. (April 2007). "Functional anatomy of the female pelvic floor.". Annals of the New York Academy of Sciences 1101 (1): 266–296. doi:10.1196/annals.1389.034. PMID 17416924. Bibcode2007NYASA1101..266A.