circualtory

• Function of the circulatory system

  • Provides oxygen, nutrients and hormones to your body's cells
  • Helps your body get rid of carbon dioxides (from respiration) and waste from things you eat and drink
• How blood moves around in human body

  1. Deoxygenated blood enters right atrium

  2. Blood enters right ventricle

  3. Blood exits right ventricle

  4. Left and right pulmonary arteries send blood to lungs

  5. Oxygenated blood returns to heart

  6. Blood enters left ventricle

  7. Blood exits left ventricle
• Diffusion


  The movement of molecules from an area of high concentration to an area of low concentration
• Gas exchange in the alveoli

  1. Oxygen moves from the air into the blood in the capillaries

  2. Carbon dioxide moves from the capillaries into the alveoli

  3. Carbon dioxide is expelled from your body when you breathe out
• Arteries carry blood Away from the heart (oxygenated)
• Veins carry blood to the heart (de-oxygenated)