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defecation    
n. 澄清,净化,排便

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  • Defecation - Wikipedia
    Defecation (or defaecation) follows digestion and is the necessary biological process by which organisms eliminate a solid, semisolid, or liquid waste material known as feces (or faeces) from the digestive tract via the anus or cloaca
  • Defecation | Anatomy, Physiology Benefits | Britannica
    Defecation, the act of eliminating solid or semisolid waste materials (feces) from the digestive tract In human beings, wastes are usually removed once or twice daily, but the frequency can vary from several times daily to three times weekly and remain within normal limits
  • Defecation - Rectum - Control - TeachMePhysiology
    Defecation can either be voluntary or involuntary depending on the situation Young children learn voluntary control of the process during toilet training and it typically remains under voluntary control throughout life
  • The Physiology of Defecation and Bowel Regularity
    Defecation is the final act of digestion, eliminating waste products, known as feces, from the body This process is crucial for overall health, representing the culmination of nutrient absorption and waste consolidation within the digestive tract
  • What Is Defaecation and How Does It Work? - Biology Insights
    When defecation proceeds, signals cause strong contractions in the colon and rectum, propelling feces toward the anus Simultaneously, the external anal sphincter is voluntarily relaxed, and abdominal muscles contract, increasing intra-abdominal pressure to assist in expelling the stool
  • Understanding the physiology of human defaecation and . . . - PubMed
    The act of defaecation, although a ubiquitous human experience, requires the coordinated actions of the anorectum and colon, pelvic floor musculature, and the enteric, peripheral and central nervous systems Defaecation is best appreciated through the description of four phases, which are, temporall …
  • Defecation reflex: Overview and what can affect it? - Medical News Today
    Defecation is the natural and essential process of having a bowel movement It is the body’s way of getting rid of waste material Sometimes, there may be complications with the defecation
  • Understanding the physiology of human defaecation and disorders of . . .
    Bampton, P A et al Spatial and temporal organization of pressure patterns throughout the unprepared colon during spontaneous defecation Am J Gastroenterol 95, 1027–1035 (2000)
  • 22. 11F: Defecation Reflex - Medicine LibreTexts
    For the adult human, the process of defecation is normally a combination of both voluntary and involuntary processes that create enough force to remove waste material from the digestive system





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