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The respiratory and circulatory systems bring oxygen and nutrients to the cells.

The respiratory and circulatory systems bring oxygen and nutrients to the cells. sinus. nose. mouth. epiglottis. trachea. lungs. The respiratory system is where gas exchange occurs. picks up oxygen from inhaled air expels carbon dioxide and water. Air exhaled. Air inhaled.

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The respiratory and circulatory systems bring oxygen and nutrients to the cells.

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  1. The respiratory and circulatory systems bring oxygen and nutrients to the cells.

  2. sinus nose mouth epiglottis trachea lungs The respiratory system is where gas exchange occurs. • picks up oxygen from inhaled air • expels carbon dioxide and water

  3. Air exhaled. Air inhaled. Muscles contract and rib cage expands. Muscles and rib cage relax. Diaphragm flattens and moves downward. Diaphragm relaxes and rises. Breathing in driven by the diaphragm and muscles of the rib cage. • Air flows from areas of high pressure to low pressure.

  4. Path of Air (Hair filters dust) (Muscular tube) (voice box with epiglottis (flap)) (long, straight tube in chest cavity) (small tubes) (Suspended in chest cavity bounded by ribs) (Tiny air sacs surrounded by capillaries) Alveoli (Drives breathing)

  5. ALVEOLI GAS EXCHANGES capillary alveolus co2 Co2 diffuses into alveolus. o2 O2 diffuses into blood. capillaries Oxygen and carbon dioxide are carried by the blood to and from the alveoli. • oxygen diffuses from alveoli into capillary • oxygen binds to hemoglobin in red blood cells • carbon dioxide diffuses from capillary into alveoli

  6. Asthma constricts airways. • Emphysema destroys alveoli. • Cystic fibrosisproduces sticky mucus. Lung diseases reduce airflow and oxygen absorption.

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