File:Avian_cloaca.jpg · Wikimedia Commons · See Wikimedia Commons
cloaca
Sign in to savethumb|Cloaca of a red-tailed hawk
A cloaca is a single opening found in birds, reptiles, and some other animals that serves as the exit point for waste from the digestive system, urine, and reproductive organs. This combined system is significant because it allows these animals to conserve water and energy by processing and eliminating multiple types of waste through one passage.
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Research
24,331 papers- Cloaca--Historical aspects and terminology.ReviewSeminars in pediatric surgery · 2016Peña ADOI: 10.1053/j.sempedsurg.2015.11.002
- Laparoscopic management of common cloaca: Current status.ReviewJournal of pediatric urology · 2022Pathak M, Saxena AKDOI: 10.1016/j.jpurol.2021.12.014
- The surgical treatment of cloaca.ReviewSeminars in pediatric surgery · 2016Bischoff ADOI: 10.1053/j.sempedsurg.2015.11.009
- The embryology of persistent cloaca and urogenital sinus malformations.ReviewAsian journal of andrology · 2020Thomas DFMDOI: 10.4103/aja.aja_72_19
- Congenital cloaca: Long-term follow-up results with emphasis on outcomes beyond childhood.ReviewSeminars in pediatric surgery · 2016Rintala RJDOI: 10.1053/j.sempedsurg.2015.11.011
- Pathology of cloaca anomalies with case correlation.ReviewSeminars in pediatric surgery · 2016Gupta A, Bischoff ADOI: 10.1053/j.sempedsurg.2015.11.003
- The great divide: septation and malformation of the cloaca, and its implications for surgeons.ReviewPediatric surgery international · 2014Gupta A, Bischoff A, Peña A et al.DOI: 10.1007/s00383-014-3593-8
- Persistent cloaca with fetal ascites: clinical features and perinatal management.Pediatric surgery international · 2022Yamamichi T, Sakai T, Yoshida M et al.DOI: 10.1007/s00383-022-05204-0
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Article
11 sectionsContents
- Etymology
- Birds
- Fish
- Mammals
- Monotremes
- Marsupials
- Placental mammals
- Reptiles
- Cloacal respiration in animals
- See also
- References
thumb|Cloaca of a red-tailed hawk
A cloaca ( ), : cloacae ( or ), or vent, is the rear orifice that serves as the only opening for the digestive (rectum), reproductive, and urinary tracts (if present) of many vertebrate animals. All amphibians, reptiles, birds, cartilaginous fish and a few mammals (monotremes, afrosoricids, and marsupial moles) have this orifice, from which they excrete both urine and feces; this is in contrast to most placental mammals, which have separate orifices for evacuation and reproduction. Excretory openings with analogous purpose in some invertebrates are also sometimes called cloacae. Mating through the cloaca is called cloacal copulation and cloacal kissing.