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cloaca    
n. 阴沟

阴沟

cloaca
n 1: (zoology) the cavity (in birds, reptiles, amphibians, most
fish, and monotremes but not mammals) at the end of the
digestive tract into which the intestinal, genital, and
urinary tracts open
2: a waste pipe that carries away sewage or surface water [synonym:
{sewer}, {sewerage}, {cloaca}]


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  • Cloaca: The Single Opening in Animals, Plus Human Implications
    The cloaca is a common chamber with only one opening where multiple body systems come together, including the genital, intestinal, and urinary tracts Simply put, there is no separate anus, reproductive organ, and urethra all with their own exterior access — everything empties into the cloaca
  • What is Cloaca? And Why Do Most Animals Have it Except Humans?
    The non-moving collection of urine in humans is a big deal if there is a cloaca "In kids with cloacas, the problem is mostly infection from the stool into their bladder "
  • CLOACA Definition Meaning - Merriam-Webster
    — Christie Wilcox, Discover Magazine, 23 Nov 2017 Sometimes, males will present their cloaca—the single opening for the bird’s digestive, urinary and reproductive tracts—which females inspect, perhaps looking for signs of infection, writes New Scientist’s Christa Lesté-Lasserre
  • Cloaca | Mammals, Birds, Reptiles | Britannica
    Cloaca, (Latin: “sewer”), in vertebrates, common chamber and outlet into which the intestinal, urinary, and genital tracts open It is present in amphibians, reptiles, birds, elasmobranch fishes (such as sharks), and monotremes A cloaca is not present in placental mammals or in most bony fishes
  • Cloacal Malformation (Persistent Cloaca): Symptoms, Diagnosis . . .
    Cloacal malformation, sometimes called persistent cloaca, is found in female children where the rectum, vagina and urethra are fused together, creating a single common channel In developing fetuses, these openings are joined in a sac known as the cloaca
  • Cloaca | definition of cloaca by Medical dictionary
    cloaca The combined urinary and faecal opening in the embryo before the two become separated The term derives from the Latin cloaca a sewer
  • What is the Difference Between Cloaca and Anus - Pediaa. Com
    The main difference between cloaca and anus is that the cloaca is the posterior opening of the body surface in vertebrates such as in birds, reptiles, fish, and amphibians, whereas the anus is an opening at the distal end of the alimentary canal
  • Cloaca - an overview | ScienceDirect Topics
    A cloaca is a common chamber into which some or all of the digestive, urinary, and reproductive tracts discharge their contents A cloaca exists in all human embryos up to 4–6 weeks, at which time it becomes partitioned into the urogenital sinus and the rectum





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