Respiratory system

Cards (9)

  • Lungs
    Organ that gets oxygen into your bloodstream and removes carbon dioxide from your blood
  • The Lungs
    • Located in the thorax
    • Separated from the lower body by the diaphragm
    • Protected by the ribcage
    • Surrounded by pleural membranes
  • Air flow through the lungs
    1. Breathe in through trachea
    2. Trachea splits into bronchi
    3. Bronchi split into bronchioles
    4. Bronchioles end at alveoli
  • Alveoli
    Small air sacs in the lungs where gas exchange takes place
  • Gas exchange in the alveoli
    1. Oxygen diffuses from alveoli into blood
    2. Carbon dioxide diffuses from blood into alveoli
  • Oxygen and carbon dioxide transport
    1. Oxygen released from red blood cells into body cells
    2. Carbon dioxide diffuses from body cells into blood
  • Breathing rate
    Number of breaths per minute
  • Calculating breathing rate
    • Kerry takes 91 breaths in 7 minutes, her breathing rate is 13 breaths per minute
  • Alveoli are well adapted for carrying out gas exchange