Foods and Nutrition 1021 Lecture Notes - Lecture 3: Blood, Thymus, Insulin

• School: Western University
• Department: Foods and Nutrition
• Course: Foods and Nutrition 1021
• Professor: Noelle Martin

Document Summary

Direct the making of each body cell"s machinery, including enzymes [proteins promoting chemical reactions] Need nutrients [energy, oxygen, water, essential nutrients] Die at varying rates; replenish themselves every 3, 10, 120 days or once every few. Provide instructions for all structural components needed to survive years (i. e. rbc every 4 months) Each cell contains a complete set of genes; different ones are active in different types of cells. Grouped together to form tissues & organs; organs work together in body systems. Specialize to store fat form the fat tissue. Important for efficient circulation of fluids to cells. Replace water lost each day; avoid deydraton. Deliver oxygen & nutrients to all body cells. Carry carbon dioxide & other waste materials away from body cells. Pick up most fats from the intestine & transports them to the blood. Ensures that fluids circulate properly among all organs: extracellular fluid surrounds cells, permits exchange of materials, intracellular fluid provides medium for all cell reactions.