Introduction to Pulmonary Ventilation
What is pulmonary ventilation?
️️ Pulmonary ventilation is the process of moving air in and out of the lungs, allowing gas
exchange with the environment to occur.
What role do the diaphragm and intercostal muscles play in ventilation?
️️ The d...
✔️✔️ Pulmonary ventilation is the process of moving air in and out of the lungs, allowing gas
exchange with the environment to occur.
What role do the diaphragm and intercostal muscles play in ventilation?
✔️✔️ The diaphragm and intercostal muscles help expand and contract the chest cavity, creating the
necessary pressure changes for air to move in and out of the lungs.
What happens to the diaphragm during inspiration?
✔️✔️ During inspiration, the diaphragm contracts and moves downward, increasing the volume of the
chest cavity and reducing pressure, which draws air into the lungs.
What is tidal volume?
✔️✔️ Tidal volume is the amount of air inhaled or exhaled during a normal breath.
How does the body regulate breathing rate?
✔️✔️ The body regulates breathing rate based on carbon dioxide levels in the blood; high levels of
CO₂ stimulate faster and deeper breaths.
What is the difference between inspiration and expiration?
✔️✔️ Inspiration is the process of drawing air into the lungs, while expiration is the release of air from
the lungs.
What is the purpose of alveoli in the lungs?
✔️✔️ Alveoli are tiny air sacs in the lungs where gas exchange occurs, allowing oxygen to enter the
blood and carbon dioxide to be expelled.
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