cloaca

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Related to cloacae: Enterobacter cloacae, avian cloaca

cloaca

(klōā`kə), in biology, enlarged posterior end of the digestive tract of some animals. The cloaca, from the Latin word for sewer, is a single chamber into which pass solid and liquid waste materials as well as the products of the reproductive organs, the gametes. Cloacas are found in amphibians, reptiles, birds, and lower mammals; higher mammals have a separate rectal outlet, the anus. The term cloaca is also used for analogous chambers in many invertebrates, such as worms of the phylum NematodaNematoda
, phylum consisting of about 12,000 known species, and many more predicted species, of worms (commonly known as roundworms or threadworms). Nematodes live in the soil and other terrestrial habitats as well as in freshwater and marine environments; some live on the deep
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.

Cloaca

 

the broadened extremity of the hindgut of some vertebrate animals. The wall of the cloaca is covered with a many-layered epithelium. The ureter, the genital ducts (sperm ducts or oviducts), and the urinary bladder open into the cloaca. It is found in certain cyclostomes (hagfish) and fishes (sharks, skates, dipnoans and pipefish) and in all amphibians, reptiles, and birds. The cloaca is found in mammals of the subclass Prototheria. In other mammals a cloaca is found only in the early embryonic stage of development; it subsequently divides into the urogenital sinus and the terminal part of the rectum, which have separate urogenital and anal openings. In amphibians the urinary bladder is formed from an evagination of the abdominal wall of the cloaca. Allantoides appear in the embryo of amniotes.

cloaca

[klō′ā·kə]
(invertebrate zoology)
The chamber which functions as a respiratory, excretory, and reproductive duct in certain invertebrates.
(vertebrate zoology)
The chamber which receives the discharges of the intestine, urinary tract, and reproductive canals in monotremes, amphibians, birds, reptiles, and many fish.

cloaca

An underground conduit for drainage; a sewer, esp. in ancient Rome.

cloaca

a cavity in the pelvic region of most vertebrates, except higher mammals, and certain invertebrates, into which the alimentary canal and the genital and urinary ducts open
References in periodicals archive ?
cloacae isolates represented the largest group of CRE isolates (41 [58.
Complicated Urinary Tract Infections (cUTI), including Pyelonephritis AVYCAZ is indicated for the treatment of complicated urinary tract infections (cUTI) including pyelonephritis caused by the following susceptible microorganisms: Escherichia coli, Klebsiella pneumoniae, Citrobacter koseri, Enterobacter aerogenes, Enterobacter cloacae, Citrobacter freundii, Proteus spp.
Escherichia coli MM294; Carolina Biological Supply) and bacteria purchased from the American Type Culture Collection (Citrobacter freundii ATCC 8090, Enterobacter cloacae ATCC 23355, and Providencia stuartii ATCC 35031).
Among specific topics are chemical speciation and heavy metal mobility in contaminated marine sediments, analyzing sediment trend to support the risk assessment of unexplored explosive ordinance, and isolating tributyltin-degrading bacteria Citrobacter braakii and Enterobacter cloacae from butyltin-polluted sediment.
Applying technology utilized in POCTEM, the kit used at hospitals and clinics for rapid diagnosis of influenza in human beings, POCTEM Avian Influenza utilizes swabs from chicken cloacae and tracheae as samples to make a simplified diagnosis of chickens infected with avian influenza within approx.
These three pathogens improve upon the previously cleared labeling, which included methicillin-resistant Staphylococcus aureus (MRSA), Pseudomonas aeruginosa and Enterobacter cloacae.
coli, n = 36; Klebsiella pneumoniae, n = 6; Enterobacter cloacae, n = 6), as identified by culture on standard solid media, were used (study approved by the local ethics committee).
Characterization of a new integron containing bla (VIM-1) and aac(6')-IIc in an Enterobacter cloacae clinical isolate from Greece.
At least 25 bacterial species were identified, including multiple strains of Escherichia coli, as well as Enterobacter cloacae, Citrobacter freundii, and Klebsiella pneumoniae.
In a specific, non-limiting instance, a brine fluid gelled with an amine oxide surfactant can have its viscosity broken with bacteria such as Enterobacter cloacae, Pseudomonas fluorescens, Pseudomonas aeruginosa, and the like.