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Cells & Systems The Circulatory System

Cells & Systems The Circulatory System. Circulatory System. System Breakdown!. The Circulatory System. What does it do? Your body’s transportation network Transports Oxygen (O) Transports Carbon Dioxide (CO 2 ) Removes Waste products Delivers nutrients . Circulatory System.

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Cells & Systems The Circulatory System

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  1. Cells & Systems The Circulatory System

  2. Circulatory System System Breakdown!

  3. The Circulatory System • What does it do? • Your body’s transportation network • Transports Oxygen (O) • Transports Carbon Dioxide (CO2) • Removes Waste products • Delivers nutrients

  4. Circulatory System The Organs / Parts

  5. The Essentials • The Circulatory System includes … • The Heart • Veins • Arteries • Capillaries

  6. Circulatory System The Heart

  7. The Human Heart

  8. The Heart • It is a pump … but did you know …? • It is actually two pumps in one? • The left side & the right side! • The right side pumps blood to your lungs • The left side out to your entire body • Did you know that is why people believe your heart is on your left side?

  9. The Heart Cont …

  10. The Heart Cont … Left Ventricle Aorta Right Ventricle Artery to Lungs Artery to Lungs Major vein to Lower Body Veins to Heart Veins to Heart Major vein to Upper Body Left Atrium Right Atrium

  11. The Heart Cont … Aorta Left Ventricle Receives deoxygenated blood and pumps to right ventricle Artery to Lungs When it contracts pumps blood to the lungs Right Ventricle Receives oxygenated blood and pumps to left ventricle Veins to Heart When it contracts, pumps blood to the body Major vein to Lower Body Carries blood from left ventricle to body Left Atrium Major vein to Upper Body Takes in deoxygenated blood from the lower body Right Atrium Takes in deoxygenated blood from the upper body

  12. The Heart Cont … • So now we know the parts … but what does it look like beating? • Live Echocardiogram Video

  13. The Heart Cont … • Random heart fact … • If you were to cut the heart open before a pump, when it pumped the pressure is so strong it could shoot blood up almost 9 meters! • 9m = 29.52 feet  basketball rim = 10 feet • That means it would 3 hoops tall!

  14. Circulatory System Arteries Veins & Capillaries

  15. Arteries Veins & Capillaries • Your heart pumps blood throughout the body • Through 100 000KM of blood vessels! • That could wrap around the earth 2.49 times! • 3 people stretching all blood vessels tied together could reach the moon! WHAT?!

  16. Arteries Veins & Capillaries • Arteries (think red) • Carry blood (oxygenated) away from your heart and lungs to the body • Veins (think blue) • Carry blood (deoxygenated) towards your heart and lungs from the body

  17. Arteries Veins & Capillaries • Blood vessels are made up of 3 different kinds of tissues • Connective (outside) • Muscle (middle) • Epithelial (inside) • Arteries in particular have a thick muscular layer? Can you think why?

  18. Arteries Veins & Capillaries • Arteries in particular have a thick muscular layer? Can you think why? • It is what expands/contracts to push your blood along Tiny experiment time!

  19. Pulse • What is your pulse? • Your heart rate or number of times your heart beats in 1 minute • Time to find it …

  20. Arteries Veins & Capillaries • Other unique features? • Veins are thinner than arteries and have special valves that stop blood from flowing backwards!

  21. Arteries Veins & Capillaries • Osmosis & Diffusion play important roles in the circulatory system • Diffusion • How your blood cells pick up CO2 and O • How your body picks up/releases certain nutrients in your small intestine • These all occur in specialized blood vessels called capillaries

  22. Arteries Veins & Capillaries • Capillaries are the smallest blood vessels in the body • Only 1 cell thick • So narrow blood cells can only pass through in 1 cell, single file rows • Why?

  23. Blood • 2nd largest connective tissue in the body • Bones are first • Made up of 4 parts • Red blood cells • White blood cells • Plasma • Platelets 55% of Blood 45% of Blood

  24. Blood Plasma • Blood cells are highly specialized • Red: Carry oxygen, no nucleus (more space for O) flexible • White: fight infection, eat bacteria • Platelets: stop cuts from bleeding (clotting) • Plasma: liquid portion of blood, transports nutrients, waste and CO2 Platelets Red White

  25. Blood Facts • Separated Blood • Your body contains about 5L of bloodor about 7% of your total body weight! • White blood cells battle

  26. White Blood Cells • How do they work? • White blood cells identify “protein marker” on cells which tell it good or bad • Good = keep looking • Bad = Nom nomnom! • This is why our body can reject organ donations  foreign body in our body • Cancer cells are produced in your body so they contain the same cell marker = passed by

  27. Circulatory System You are now smarter than before

  28. Circulatory System Intelligence Test

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