NS 1150 Lecture Notes - Lecture 7: Galactose, Fructose, Pepsin
12 Sep 2016
School
Department
Course
Professor
Document Summary
Release of secretin from secretin containing cells. Release of cholecystokinin from cck containing cells. Release of gastric inhibiting protein from gip containing cells. Insulin opens the gate to allow cells to absorb glucose. Small intestine: 6 to 8 meters long (20-25 feet) Villa are little fingers that line the sides and increase surface area. Along the surface of villa are specialized epithelial cells. Guard between outside world and inner body. High turnover (regenerate about every 48 hours) Epithelial cells are weakened, so it"s very easy for alien particles to enter body. Stools that float, are foul smelling, bloody, or fatty . Unexplained weight loss (although people can be overweight or of normal weight) Fatigue, difficulty concentrating and short term memory. Mesentery: holds the intestine together so it doesnt get tangled up. Lack of lactose molecules: cannot absorb lactose/galactose. Most adults in the world are lactose intolerant. Might regulate amount of bacteria in gut.
