body basics- N3 - HNF 150 P Thurston BODY BASICS Cells =...

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HNF 150      Fall 2007 P Thurston Lecture Notes BODY BASICS Cells  A. Cell Membrane B. Microvilli C. Nuclear membrane D. Mitochondria E. Nucleus The body’s cells need (3): Tissues =  Organs =  SYSTEMS OF THE BODY 1
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HNF 150      Fall 2007 P Thurston Lecture Notes A.  Circulatory and Lymphatic System 2 Types of  BODY FLUIDS:  1) blood and 2) lymph Functions (2): 1. Supply tissues with energy, oxygen and nutrients 2. Carry away waste materials Arteries  = carry blood containing fresh oxygen from heart to tissues Veins  = carry blood with carbon dioxide from tissues to heart Red Blood Cell  = Lymphatic  = has own separate vessels Adequate circulation requires (3): 1. Good nutrition 2. Fluids 3. Cardiovascular fitness B.  Hormonal System = Hormones =  chemical messengers Examples: 1.  Insulin is secreted by pancreas when blood glucose is too high 2.   Glucagon is secreted by pancreas when blood glucose is too low Nutrition can affect hormonal balance: Hormones regulate: 2
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