Anus

... Members of the subphyla Urochordata and Cephalochordata are chordates although they lack A a backbone. B pharyngeal pouches. C a notochord. D an anus. is it A? Three common characteristics of adult vertebrates are A skull, notochord, and complex organ system. B backbone, segmentation, and open ...

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Imagine a very simple creature: Something with a blind gut (one opening is mouth and anus), like a jellyfish. After the evolution of a true gut, with mouth and anus, animals gain a front and rear end (movement now is not random, but mouth-first). The most usefull ...

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Many diseases and conditions can cause rectal bleeding and toilet paper is not the main one. Common causes include: anal fissures, hemorrhoids, cancers and polyps of the rectum and colon, diverticulosis, abnormal blood vessels (angiodysplasia), ulcerative colitis, ulcerative proctitis, Crohn's colit...

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... engaging in your rather rash rhetoric. Now design meets even your requirements. Lets take the digestive system of say, yourself. From teeth to anus there is purpose is there not. You know the food intake goes into your stomach, gets digested, produces the necessary fuel to power the cellular ...

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... However, it's the crawling on my head that is driving me nuts and I feel like the crawling may be unrelated to the bugs that bite my feet, ankles, anus and back. I mostly want to know what the issue is so I can accept it and stop going nuts wondering what the heck is on me and always wondering ...

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