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Circulatory Syste m. Circulatory System:. Organs and tissues that transport essential materials to body cells and remove waste products Blood is moved through body by heart pumping Picks up nutrients/drops off waste Blood travels in 3 Vessles : Arteries Moves blood AWAY from heart Veins
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Circulatory System: • Organs and tissues that transport essential materials to body cells and remove waste products • Blood is moved through body by heart pumping • Picks up nutrients/drops off waste • Blood travels in 3 Vessles: • Arteries • Moves blood AWAY from heart • Veins • Takes blood TO heart • Capillaries • Tiny tubes that carry blood from the arteries to the body’s cells and then back to the veins
ONCE AGAIN: 1. ARTERIES CARRY BLOOD: ??? 2. VEINS CARRY BLOOD:??? 3. CAPILLERIES ARE: ???? We have over 80,000 miles of blood vessels throughout our body!!!!!!
2 Pathways of the Circulatory System: • Pulmonary Circulation • -Flow of blood FROM heart TO lungs and back to heart • Lungs • -pulmonary arteries carry blood with CO2 away from heart • -pulmonary veins carry O2 blood to heart • 2. Systemic Circulation • - Flow of blood to ALL other body tissue • (except lungs)
4 Chambers of Heart Upper Chambers: Atriums Lower Chambers: Ventricles
BLOOD • Mixture of solids within a liquid-Plasma • Plasma • 92% water • Transports blood solids, nutrients, hormones, and other materials • White Bloods Cells • Helps fight disease and infection by attacking germs that enter the body • Red Blood Cells • Carry oxygen to cells and carbon dioxide away from them • Platelets • Help blood form clot at site of wound • Seals a cut and prevents excessive blood loss
BLOOD PRESSURE • -PRESSURE THAT IS EXERTED AS BLOOD MOVES THROUGH YOUR BODY AND AGAINST WALLS OF BLOOD VESSELS • Systolic Pressure • -When BP is at HIGHEST point • -As your heart contracts to push blood into arteries • Diastolic Pressure • - When BP is at its LOWEST point
Blood Types Type A, B, AB, and O Type A blood has substance A B has substance B AB has both substance AB Type O has Neither (O- universal donor)
PROBLEMS of the Circulatory System • Hypertension (blood pressure is higher than normal= heart attack, stoke, kidney failure) • Stroke (blood clots block vessels in brain or rupture of blood vessel) • Heart Attack (blockage of blood flow to heart) • Arteriosclerosis (arteries harden reducing amount of blood flow allowed through) • Anemia • Leukemia • Hemophilia
How to take Care of Circulatory System • Limit fat in foods • Get regular physical activity • Avoid tobacco • Manage Stress