Mechanics of Pulmonary
Ventilation
Biruk G.
Bahir Dar University
CMHS
Department of M. Physiology
,Objectives
At the end of this system, students are expected to:
Describe functional structure of the respiratory system.
Explain the mechanisms of breathing
Differentiate static and dynamic lung volumes
June 4, 2024 2
, Introduction
What is respiration?
Respiration = the series of exchanges that leads to
the uptake of oxygen by the cells, and the release of
carbon dioxide to the lungs.
• The primary function of the lung is gas exchange, which consists
of movement of O2 into the body and removal of CO2
• The lung also plays a role for
– Defense
– Metabolic function
– Acid base balance
June 4, 2024 3
, Introduction
Exchange of gases in animals
• Unicellular organisms: simple diffusion of O2
and CO2
• Large animals:
– Gas exchange occurs by the lungs
4
Ventilation
Biruk G.
Bahir Dar University
CMHS
Department of M. Physiology
,Objectives
At the end of this system, students are expected to:
Describe functional structure of the respiratory system.
Explain the mechanisms of breathing
Differentiate static and dynamic lung volumes
June 4, 2024 2
, Introduction
What is respiration?
Respiration = the series of exchanges that leads to
the uptake of oxygen by the cells, and the release of
carbon dioxide to the lungs.
• The primary function of the lung is gas exchange, which consists
of movement of O2 into the body and removal of CO2
• The lung also plays a role for
– Defense
– Metabolic function
– Acid base balance
June 4, 2024 3
, Introduction
Exchange of gases in animals
• Unicellular organisms: simple diffusion of O2
and CO2
• Large animals:
– Gas exchange occurs by the lungs
4
