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Unformatted text preview: * Some B vitamins and vitamin K are synthesized. * Peritonitis- acute inflammation of the peritoneal cavity Defecation Feces consist of inorganic salts, sloughed off epithelial cells, bacteria, products of bacterial decomposition, undigested food, and water. * Mass peristalsis initiates the defecation reflex. * impulses from parasympathetic fibers, voluntary contracts of the diaphragm and abdominal muscles, all act to cause contraction of the internal anal sphincter . * The external anal sphincter is voluntarily controlled. * Diarrhea- defecation of liquid feces caused by increased movement of the intestines, decreasing the time for absorption. * Constipation- difficult defecation of dry feces caused by decreased motility....
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- Fall '10