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Circulatory System

Circulatory System. Functions. Transport (carry) nutrients to all parts of the body Transports oxygen and carbon dioxide to and from the lungs Pick up waste products and take to kidneys Help fight infections. Major Organ. Heart

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Circulatory System

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  1. Circulatory System

  2. Functions • Transport (carry) nutrients to all parts of the body • Transports oxygen and carbon dioxide to and from the lungs • Pick up waste products and take to kidneys • Help fight infections

  3. Major Organ Heart • causes blood to flow through the body by its pumping action • Cardiac muscles provide the force needed to for the heart to beat

  4. Sequence of Blood Flow in the body Heart veins arteries capillaries

  5. Blood Vessels (organs) Arteries • Carries blood away from the heart • Carries oxygen and nutrients to all parts of the body • Oxygen rich blood • Thickest blood vessel

  6. Blood Vessels Capillaries • Smallest blood vessel • Where nutrients and wastes are exchanged between the blood and the cell • Oxygen/nutrients are dropped off, and carbon dioxide/waste are picked up • Uses the process of diffusion

  7. Blood Vessels Veins • Carries blood to the heart • Carries waste products from all parts of the body • Oxygen-poor blood • Valves keep blood moving to the heart

  8. Blood • Red blood cells – carry oxygen and carbon dioxide • White blood cells – fight infections • Platelets – help the body to clot after injury • Plasma – liquid part of blood, mostly water

  9. How does the circulatory system work with other systems? • Works with the excretory system to carry wastes to the kidneys • Works with the digestive system to pick up nutrients from food (small intestine) • Works with the respiratory system to pick up oxygen and drop off carbon dioxide • Skeletal system produces red blood cells

  10. AIDS • Infectious Disease • Caused by a virus • Virus attacks and kills white blood cells • Patients with AIDS are unable to fight off future infectious and often dies from illnesses that are easy to cure (colds, flue, pneumonia)

  11. Reinforcement Website • Article, game, video, practice quiz: • http://kidshealth.org/kid/htbw/CSquiz.html • Rags to riches game: • http://www.quia.com/rr/30450.html • Interactive Heart: • http://interactivehuman.blogspot.com/2008/10/heart-heart-information-cardiovascular.html • Study Jams: • http://studyjams.scholastic.com/studyjams/jams/science/human-body/circulatory-system.htm

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