| 单词 | megarectum |
| 释义 | megarectummegarectum[¦meg·ə¦rek·təm]megarectummegarectum[meg″ah-rek´tum]meg·a·rec·tum(meg'ă-rek'tŭm),megarectum(1) A faeces-filled rectum in which intrinsic electromechanical activity that would otherwise stimulate the external anal sphincter and puborectalis muscle has ceased. Megarecta are most common in the elderly, and cause constipation.(2) A term of waning popularity for (toxic) megacolon involving the rectum. megarectumA feces-filled rectum in which intrinsic electromechanical activity that would otherwise stimulate the external anal sphincter and puborectalis muscle has ceased, most common in the elderly, resulting in constipation. See Megacolon.meg·a·rec·tum(meg'ă-rek'tŭm) |
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