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Circulatory System

Circulatory System. Main Function. Carries oxygen from lungs to cells Carries carbon dioxide from cells to lungs Carries nutrients from intestines to cells Carries cellular wastes from cells to kidneys. Main Parts. Heart the pump Blood fluid in which materials

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Circulatory System

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  1. Circulatory System

  2. Main Function • Carries oxygen from lungs to cells • Carries carbon dioxide from cells to lungs • Carries nutrients from intestines to cells • Carries cellular wastes from cells to kidneys

  3. Main Parts • Heart • the pump • Blood • fluid in which materials are transported • Vessels • tubes to carry the blood

  4. Types of Blood vessels • Arteries • Carry blood away from the Heart • Veins • Carry blood into the Heart • Capillaries • Connect arteries to veins • Gas exchange, drops off O2, picks up CO2

  5. Parts of the heart • Atria(or Atriums) • Receiving chambers • Ventricles • Pumping chambers • Valves • Prevents backflow • Septum • Divides the Heart

  6. ANATOMY OF THE HEART

  7. PATHWAY OF BLOOD • We're going to make a list of the structures that a red blood cell would pass through when moving in and out of your heart. • Start at the lungs and end at the lungs

  8. PATHWAY OF BLOOD • Lungspicks up oxygen • Pulmonary Vein into the heart • Through the Left Atrium and Ventricle pumped tobody • Aorta-major artery out of heart • Arteriespath through body • Capillariesdestination ofoxygen, carbon dioxide is picked up

  9. Pathway of Blood • Veinstake deoxygenatedblood back to the heart • Vena Cava's "blue" blood enters the heart • Through the Right Atriumand Ventricle pumped tolungs • Pulmonary Artery"blue" blood heads to lungs • Lungs-Drops off carbon dioxide

  10. Activity • Pulse: • the beating of the heart that can be felt by pressing on an artery. • Pulse rate: • measurement of how fast the heart is beating

  11. blood

  12. Composition of Blood • The Plasma (Fluid) makes up 55% of the blood volume. • The Solids (Cells) make up 45% of the blood volume

  13. Blood Plasma • 97% Water • 3% Other • Antibodies and Proteins • Nutrients and Wastes

  14. Blood Solids • Red Blood Cells • Carry oxygen • Contain Hemoglobin • White Blood Cells • Attack bacteria & other invaders • Platelets • Control the blood clotting process

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