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```markdown # Body System and Your Health ## Topic 1 * **Blood** * Plasma 55% * Red Blood Cells 44% * White Blood Cells, Platelets 1% * Less than 1% fights infection * Clots at wards * **Blood Cells** * Erythrocytes: Oxygen * Leukocytes: Fights...

```markdown # Body System and Your Health ## Topic 1 * **Blood** * Plasma 55% * Red Blood Cells 44% * White Blood Cells, Platelets 1% * Less than 1% fights infection * Clots at wards * **Blood Cells** * Erythrocytes: Oxygen * Leukocytes: Fights infection * Thrombocytes: Blood Clots * **Cardiovascular System** * **Common causes Smoking** * **High Blood Pressure** * Heart attack or stroke * **High Cholesterol** * Prevent: Better Diet, no smoking and more exercise * Less stress * **High Blood Pressure Causes** * Damage of bacteria * **Preventative Measures** * 15:90 Sphygmomanometer * **Lacking Damage Lines** * Heart Attack & Stroke * Weakened blood vessels * Too much blood to the heart * **High Cholesterol: If** * Lots of fat * Blocks arteries * Increases heart disease * **Disorders of Digestive System** **Common Causes:** * Colon Cancer * Ulcer * Colon (large intestine) * Ulcer (stomach and small intestine) * Prevent Better * Fibre Diet * Colon Cancer caused by low fibre diet * Waste to buildup in large insestines * What can cause ulcers: Stress smoking * Excessive Alcohol * Ulcer cause peptic ulcer (hole) in stomach or small intestine * **Disorders of Respiratory System** * **Common Causes:** * Smoking * Pollutants * Lung cancer * Caused from smoking and pollutants. * Bronchitis has Infammation of the innermost Cilla on the inside of narrower airways. * Mucus builds up which causes lots of coughs * Emphysema is extreme bronchitis and does't go away. Cilla can be damaged and die. * **Disorders of Excretory System** * Kidney stones caused by built up waste in kidneys. Waste doesn't get filtered out and creates stone. * Kidney Failure caused by lack of removal of kidney stones. Patients go on dialysis to filter blood. ```