人的排便有两种方式,一次式和二次式。一次式是在排便反射;中动下,一次性排出肠道粪便。二次式是在一次排便后,需要第二次排便冲动,再次增加腹压和松弛肛门括约肌排出残余粪便。由于二次排便间隔时间长,蹲便时间长,导致肛门周围静脉回流差,更易患痔疮。正确的排便方法有助于缩短时间,预防痔疮。例如在排便感明显时立即如厕,不可久忍大便;上厕所要专心,不要看报纸、玩手机等;排便动作完成后稍事休息,等产生第二次排便感时,再做排便动作,切 There are two ways to defecate people, primary and secondary. One-time is reflected in the defecation; under the move, one-time excretion of intestinal manure. The secondary is that after a bowel movement, a second bowel movement is required, the abdominal pressure is increased again and the anal sphincter is released to drain the residual excrement. As a result of secondary bowel interval long, squatting a long time, leading to poor anal venous return, more susceptible to hemorrhoids. Proper bowel movements help to shorten the time and prevent hemorrhoids. For example, in the obvious defecation immediately toilet, can not tolerate stool for a long time; to concentrate on the toilet, do not read newspapers, playing cell phones, etc .; defecation action is completed after a short break, and so produce a second defecation, do defecation action, cut