Image Description

This concept map illustrates the steps of gas exchange. The flow is as follows:

• Respirations
  • Inhalation of air
• Expiration to atmosphere
• Alveoli
  • Pulmonary capillaries
  • Diffusion
  • Hemoglobin carrying capacity
    • Perfusion
    • Delivery of oxygen and nutrients
  • Cells lining alveoli
• Cellular uptake of oxygen and nutrients
• Cellular metabolism and energy
  • Waste products – carbon dioxide
  • Capillaries carrying waste out of cell through perfusion
    • Expiration