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Essential Question What makes you totally complete? Unit Questions What is the skeletal system? Why is oxygen important? Where does digestion begins? What are the three types of muscles? The Body ED 498 Instructional Technology By Alma Wells Overview • Skeleton • Digestive • Muscles • Respiratory • Reproduction The Human Skeleton • 206 bones/flexible • Bony framework • Gives the body – – – – Shape Protect vital organs System of levers Enable the body to move Continues • Houses – Bone marrow • Divided into two main parts • Axial skeleton • Head • Neck • Trunk – Blood-forming tissue • Appendicular • Arms • Legs • And their supports Digestion • Begins in the mouth • Breaks down food /simple substances • Intestinal wall (pass) • Bloodstream • Nourish the body Muscle • • • • Over 600 elastic tissue Holds bones together Gives the body shape Three types – Skeletal muscle • legs, arms, abdomen, chest, neck, and face – Smooth muscle • Stomach, intestines, blood vessels, and bladder – Cardiac • Walls of the heart Respiratory • Use of oxygen • Divided 3 phrases – External • Takes in oxygen & releases carbon dioxide – Cellular • Chemical reactions that releases substance for cell function – Internal • Oxygen transported to body tissue & carbon dioxide is carried away from them. Reproduction create more of one’s own kind Science is wonderfully equipped to answer the question "How?" but it gets terribly confused when you ask the question "Why?" Erwin Chargaff
