NUR 1021C Chapter Notes - Chapter Lab Test 2: Ileocecal Valve, Somatic Nervous System, Autonomic Nervous System
10 Feb 2020
School
Department
Course
Professor
Document Summary
Physiology of defecation: feces or stool: excreted waste products, large intestine. This mucus contains large amounts of bicarbonate ions. Mucus serves to protect the wall of the large intestine from trauma by the acid formed in the feces, and it serves as an adherent for holding the fecal matter together. Mucus also protects the intestinal wall from bacterial activity: flatus: largely air and the by-products of the digestion of carbohydrates, haustral churning: movement of the chyme back and forth within the haustra. Cylindrical (contour of the rectum) about 2. 5cm in diameter in adults: amount: Aromatic: affected by ingested food and individuals own bacterial flora: constituents: Small amounts of undigested roughage, sloughed dead bacteria and epithelial cells, date, protein, dried constituents of digestive juices. Factors that affect defecation: development, newborns and infants, meconium: first fecal material passed by the newborn, normally up to 24 hours after birth.
