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Rectum - Anatomy & Physiology (view source)
Revision as of 16:54, 22 July 2008
, 16:54, 22 July 2008→Function
'''Defeacation'''
'''Defeacation'''
*After the mass movements of the [[Large Intestine - Anatomy & Phsyiology|large intestine]], the rectum becomes filled with faeces.
*After the mass movements of the [[Large Intestine - Anatomy & Physiology|large intestine]], the rectum becomes filled with faeces.
*This stimulates pressue sensitive cells in the wall of the rectum and initiates the defeacation reflex.
*This stimulates pressue sensitive cells in the wall of the rectum and initiates the defeacation reflex.
*The reflex causes a forceful contraction of the rectum, and relaxation of the internal anal sphincter.
*The reflex causes a forceful contraction of the rectum, and relaxation of the internal anal sphincter.