HLTA02H3 Lecture : Lecture 3

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11 Jan 2012
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Primary function is to produce, thrive and spread quickly. Make genetic changes that ensure their survival. y endothelium: under the skin. y support body and bones. y bone is dynamic: constantly reforming and regeneration. y around 30, you have reached bone peak mass. Bone is constantly re-building. y build strength in your bone when exercise and you also build muscle. y voluntary: skeletal y y smooth: after chewing, you don t need to move your food for it to go down. Involuntary: cardiac & smooth your system. y highest when you come home and you feel tired. y over 600 muscles in muscular system. Make up more than half of your weight. 1990s y consumes 20% of the calories you consume. y rapid development in the first 5 years of life. Skull is fusing when an infant is born but the bones are not all in place.

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