Review of Digestive System Do Now—On Monday’s box Josie is a 32 year old female who weighs 145 pounds and is 5 feet and 6 inches tall. What is her BMR? • Men: 66 + (6.23 x weight) + (12.7 X height in inches) – (6.8 x age) = BMR • Women: 655 + (4.35 x weight) + (4.7 X height in inches) – (4.7 x age) = BMR Digestive system summary Gastrointestinal tract Mouth Saliva lubricates Amylase starts starch digestion Chewing breaks down food Pharnyx Epiglottis keeps food from airways Esophagus Peristalsis starts Stomach Food storage Acid kills bacteria, unfolds proteins, activates pepsin Produces chyme Small intestines Most digestion & absorption Pancreatic enzymes digest food & bicarbonate neutralizes acid Bile breaks up fat Large intestines Absorb water Bacteria digest fiber, make vitamins Rectum Stores feces Metabolism • Combination of all the chemical reactions in your body's cells Catabolic reactions Anabolic reactions • release energy • Break down large molecules to simple molecules • Protein amino acids • Fat fatty acids • Carbohydrates glucose, fructose, galactose • absorb energy • Convert simple molecules to larger molecules • Glucose → Glycogen • Amino acids → Proteins • Fatty acids and glycerol → Triglycerides 11/30 DOL • List all the major parts of the digestive system from beginning to end. You should include 5 main organs, 3 accessory organs, and 4 sphincters. The accessory organs do not need to be in order. • Briefly explain what metabolism is.