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anus    
n. 肛门

肛门

anus
n 1: the excretory opening at the end of the alimentary canal

Anus \A"nus\, n. [L., prob. for asnus: cf. Gr. ? to sit, Skr.
[=a]s.] (Anat.)
The posterior opening of the alimentary canal, through which
the excrements are expelled.
[1913 Webster]


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  • Human anus - Wikipedia
    Anatomy of the human anus Frontal section The anus is the final part of the gastrointestinal tract, and directly continues from the rectum, passing through the pelvic floor The top and bottom of the anus are surrounded by the internal and external anal sphincters, two muscular rings which control defecation [6]: 397 The anus is surrounded in its length by folds called anal valves, which
  • Anus: Function, Anatomy, Conditions Diagram - Cleveland Clinic
    Your anus is the last two inches of your large intestine Poop in your rectum triggers your anal sphincter muscles to release so it can come out
  • Overview of the Anus and Rectum - The Merck Manuals
    The anus is formed partly from the surface layers of the body, including the skin, and partly from the intestine The rectal lining consists of glistening red tissue containing mucus glands—much like the rest of the intestinal lining The lining of the rectum is relatively insensitive to pain, but the nerves from the anus and nearby external skin are very sensitive to pain The veins from
  • Anal Anatomy - Anal Neoplasia Clinic, Research and Education Center
    The proximal portion of the anus is connected to the rectum, which is the final section of the large intestine The anal canal terminates at the anal verge, where stool exits the body The rectum is lined by columnar epithelial cells while the anal canal is lined by squamous epithelial cells
  • Anal disorders Guide: Causes, Symptoms and Treatment Options
    Anal disorders - an easy to understand guide covering causes, diagnosis, symptoms, treatment and prevention plus additional in depth medical information
  • Rectum and Anus
    The anus is the opening at the far end of the digestive tract through which stool leaves the body The anus is formed partly from the surface layers of the body, including the skin, and partly from the intestine The anus is lined with a continuation of the external skin
  • Human digestive system - Rectum, Anus, Digestion | Britannica
    Human digestive system - Rectum, Anus, Digestion: The rectum, which is a continuation of the sigmoid colon, begins in front of the midsacrum (the sacrum is the triangular bone near the base of the spine and between the two hipbones) It ends in a dilated portion called the rectal ampulla, which in front is in contact with the rear surface of the prostate in the male and with the posterior
  • Anus - Structure, Function Location
    The anus is the terminal opening of the digestive tract through which feces are expelled from the body It marks the end of the anal canal and plays a critical role in the voluntary and involuntary control of defecation
  • Colon, rectum, and anus (video) | Khan Academy
    Explore the final part of the gastrointestinal tract, the large intestine, rectum, and anus Understand their roles in absorbing water, inorganic ions, and aiding in digestion with the help of microorganisms Learn about the implications of water absorption on conditions like diarrhea and constipation, and the importance of the rectum and anus in waste storage and expulsion





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