Defecation
I NEED TO SHIT!!!!
to dislodge blood clots (see thrombosis).
Defecation may be involuntary or under voluntary control. Young children learn voluntary control through the process of toilet training. Once trained, loss of control causing fecal incontinence may be caused by physical injury (such as damage to the anal sphincter that may result from an episiotomy), intense fright, inflammatory bowel disease, impaired water absorption in the colon (see diarrhea), and psychological or neurological factors.
The positions and modalities of defecation are culture-dependent. In some regions of the world, such as East Asia, rural parts of the Middle East, and parts of Southern Europe, it is customary to squat (typically using squat toilets), while in most of the Western World sit-down toilets are used. Similarly, the anus and buttocks may be cleansed with toilet paper or similar paper products, rags, leaves (including seaweed), corn cobs or sticks. In some cultures water is also used (e.g. as with a bidet).
