什么是膀胱?
膀胱是储存由肾生成的尿液的器官。它是一个囊状肌性器官,能储存约500毫升尿液(图1a和1b)。
多数人都是在膀胱半充盈时开始有膀胱充盈的感觉。为排空膀胱,您需要身心放松。这通常意味着身处一个舒适的环境,如洗手间或一个私人空间。大脑随后会给膀胱发送开始排尿的信号。
排尿频率取决于很多因素,但尤其受液体饮用量的影响。多数人白天排尿次数少于八次,在夜间不排尿或排尿一次。
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