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Circulatory, Respiratory, & Excretory Systems

Circulatory, Respiratory, & Excretory Systems. Bellwork – 3/16/15. List the components of whole blood. 1. Circulatory System. Blood Plasma- 90% H 2 O Cells White blood cells- immunity Red blood cells- carry O 2 & CO 2 ; hemoglobin carries the molecules Platelets- for clotting.

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Circulatory, Respiratory, & Excretory Systems

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  1. Circulatory, Respiratory, & Excretory Systems

  2. Bellwork – 3/16/15 List the components of whole blood.

  3. 1. Circulatory System • Blood • Plasma- 90% H2O • Cells • White blood cells- immunity • Red blood cells- carry O2 & CO2; hemoglobin carries the molecules • Platelets- for clotting

  4. Bellwork – 3/17/15 What parts of your body make up the circulatory system? • Blood • Blood vessels • Heart

  5. Blood Vessels • Arteries- carry blood AWAY from the heart • Veins- carry blood back to the heart • Capillaries- smallest vessels; where O2, CO2 , nutrients and waste move in or out of the blood.

  6. The Human Heart • 4 Chambers • Atria/atrium- small chambers on the top of the heart; collect blood as it enters • Ventricles- large chambers on the bottom of the heart; pump blood out of the heart • Valves- one way doors; make the sound of the heartbeat

  7. 1. Respiratory System • Function: To supply oxygen to all the parts of your body. It accomplishes this through breathing: inhaling oxygen-rich air and exhaling air filled with carbon dioxide, which is a waste gas.

  8. 2. Respiratory System • Trachea: tube from nose and mouth to lungs • Lungs • Bronchi- the 2 branches of the lungs • Bronchioles- smaller branches in each lung • Alveoli- small sacks surrounded by capillaries; gas exchange happens here

  9. 3. Excretory System • Function: Maintains homeostasis by getting rid of waste. • Organs • Lungs- eliminate CO2 • Skin- eliminates H2O, salts and urea by sweating • Kidneys- remove waste from blood, maintain pH, regulate H2O content

  10. Dialysis

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