NTRI 2000 Chapter 3: NTRI Ch. 3
Document Summary
Chapter 3 : the remarkable body: a cell in its environment // body contains trillions of cells, cell: self contained; living entities, depend on one another. Liver gets first pick of the nutrients from the cardiovascular system: body fluids. Supply energy, oxygen, nutrients, and water: deliver fresh supplies and pick up waste, circulating fluids. Lymphatic system: lymph, how body fluids circulate around cells, travels in its own vessels. Intracellular fluid: allows cell reactions take place, holds cellular shape. Picks up oxygen: releases carbon dioxide, left heart - pumps oxygenated blood to body, which is the pumped to rest of body, red: oxygenated blood, blue: deoxygenated, blood passes through the digestive system, picks up nutrients. Inform brain about degree of body fatness: regulate the digestive system in response to meals or fasting, help regulate hunger and appetite, regulate body"s reaction to stress, suppressing hunger and digestion.
