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1 6 circulatory disease

1 6 circulatory disease






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    1 6 circulatory disease 1 6 circulatory disease Presentation Transcript

    • DO NOW Describe the structures and functions of the blood’s components.
    • REGENTS REVIEW The diagram below shows a cell in the human body engulfing a bacterial cell. The cell labeled X is most likely a1. red blood cell2. white blood cell3. liver cell4. nerve cell
    • Objective:How do thediseases ofthe circulatorysystemprevent themaintenanceofhomeostasis?
    • SIGNS OF CIRCULATORY DISEASE Most significant ef fects seen in the brain or the heart Tissues in these organs die without oxygen
    • COMMON DISEASES OF CIRCULATORY SYSTEM1. Heart disease  Leading cause of death in the United States2. Stroke  Brain tissue death3. High blood pressure  People with high blood pressure are at risk for heart disease and stroke
    • HEART DISEASE Heart muscle requires constant oxygen supply  Provided by just two coronary arteries and branches The most common cause of heart disease is caused when blood flow in these is obstructedCardiovascular disease is another term for heart disease*
    • HEART DISEASEATHEROSCLEROSIS Fat deposits called PLAQUE build up on artery walls  Eventually cause arteries to stiffen  Can cause flow of blood to be obstructed  Cause: Build up by eating fatty foods, high in saturated fat, or lots of cholesterol
    • HEART DISEASE LEADING TO HEART ATTACK If the plaque ruptures, blood clot may form and block artery Blocked vessels don’t get the oxygen needed and can lead to damaged or dead tissues  Heart attacks are when heart cells are damaged or die  HEART FAILURE can result – heart stops Cocaine, cigarette smoking, atherosclerosis can lead to heart attacks
    • REGENTS REVIEW High blood pressure can usually be reduced if a person1. Eats a diet high in salt and reduces physical activity2. Eats a diet high in saturated fats and reduces stress3. Reduces physical activity and decreases the consumption of complex carbohydrates4. Exercises regularly and lowers the amount of saturated fats consumed
    • STROKE Sudden death of brain cells when blood supply is interrupted Can be caused in two ways: 1. Blood clot blocks a blood vessel in the brain 2. Week blood vessel breaks and bleeds into the brain
    • STROKE Symptoms of a stroke: 1. Headache 2. Numbness 3. Dizziness 4. Confusion 5. Trouble speaking Results of a stroke depend on location in the brain
    • HIGH BLOOD PRESSURE Also known as HYPERTENSION Blood pressure greater than 140/90 Heart struggles to push blood through vessels  Major strain on the heart
    • HIGH BLOOD PRESSURE Can cause small tears in blood vessels atherosclerosis Stif fened arteries can lead to high blood pressure Diet, exercise, and prescription drugs can help control HBPIf gone untreated, can lead to heart attack, stroke, kidney damage
    • NAPPY’S REVIEW A blockage in the carotid arteries – the arteries that supply the brain with blood – if obstructed long enough, can result in1. Stroke2. Heart disease3. High blood pressure4. The silly willys
    • REGENTS REVIEW Which organic compounds are needed for the synthesis of the plasma membrane, contain a large amount of stored energy and have been linked to cardiovascular disease?1. Complex carbs2. Saturated fats3. Simple sugars4. Polyunsaturated fats