NUT-2202 Lecture Notes - Lecture 4: Pylorus, Blood Sugar, Large Intestine
Document Summary
Hormones: assist homeostasis (normal conditions: chemical messengers, secreted and released directly into blood by glands, stimulate organs to take action. Glands: monitor conditions in the body, pancreas. Insulin lowers blood sugar (80-90 normal), glucagon raises blood sugar. Sweet, sour, bitter, salty: sweet, salty and fatty foods. Can lead to drastic overeating of these substances. Digestive tract: flexible, muscular tube, total length: 26 feet, body surrounds digestive canal, job is to digest food to its components, absorb and excrete. Digestive juices: salivary glands, stomach, pancreas, liver, small intestine. I am what i eat : within 24-48 hours. 90% of carbs, fat and protein are digested and absorbed: mouth. Chime: byproduct of digestion in stomach (soup like: small intestine (majority of nutrient absorption) Absorption: nutrient molecules transverse intestinal lining. Fat soluble components: cells of small intestine are selective (certain cells for certain jobs, folded structure. Absorb nutrients as they pass through, pass nutrients to circulatory system.
