Foods and Nutrition 1021 Lecture Notes - Lecture 3: Microorganism, Extracellular Fluid, Peristalsis
20 Apr 2016
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Food and nutrition chapter 3: the remarkable body lecture 3. Genes- direct the making of each body cells machinery, including enzymes (proteins facilitating chemical reactions) Provide instructions for all structural components needed to survive. Die at varying rates; replenish themselves every 3, 10, 120 days or once every few years (ex. Each cell contains a complete set of genes; different ones are active in different types of cells. Specialized cells- grouped together to form tissues and organs; organs work together in body systems. Fat cells- specialize to store fat in the adipose tissue. Fluid and water intake- important for efficient circulation to cells. Blood and lymph- two main body fluids: deliver oxygen and nutrients to all body cells, carry co2 and other waste materials away from the body cells. Lymphatic vessels- pick up most fats from the intestine and transport them to the blood. Cardiovascular system- primarily the heart, lungs, arteries, veins, capillaries.
