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Blood and the respiratory system
Blood and the respiratory system

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1.1 Structure of the respiratory system

Pulmonary ventilation, the movement of air into and out of the lungs, involves the main structures of the respiratory system (Figure 1). They include:

  • the lungs
  • a system of airways that deliver the air to the blood vessels of the lungs
  • the musculoskeletal system that ventilates the lungs
  • the central and peripheral nervous system that controls the rate and depth of breathing.
Described image
Figure 1 Cross-section through the structures of the respiratory system.