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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 - Wikipedia
    In the embryo, the embryonic cloaca divides into a posterior region that becomes part of the anus, and an anterior region that develops depending on sex: in males, it forms the penile urethra, while in females, it develops into the vestibule or urogenital sinus that receives the urethra and vagina [13][19] However, some placentals retain a
  • Cloaca: The Single Opening in Animals, Plus Human Implications
    A cloaca is a single bodily opening in many animals for excretion and reproduction In rare human cases, failure to separate during development leads to complications
  • 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
  • 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
    John Timmer, ArsTechnica, 17 Sep 2025 Everything comes out of one all-purpose hole called the cloaca in a chunky white paste that’s both poop and pee combined
  • Cloaca (Cloacal Anomaly) - Childrens Mercy
    Cloaca is a type of anorectal malformation in which the rectum, vagina and urinary tract are joined (waste, gynecologic and urinary structures are joined) This "common channel" ends in a single opening on the baby's bottom
  • Cloacal Malformation (Persistent Cloaca): Symptoms, Diagnosis . . .
    In developing fetuses, these openings are joined in a sac known as the cloaca 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
  • Cloacal Malformation | Childrens Hospital Colorado
    What is cloaca? A cloacal malformation, or simply cloaca, is an anorectal malformation that affects the rectum, urogenital tract, vagina and urethra in females Females are typically born with three perineal openings: the urethra, vagina and anus
  • 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





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