5 Questions
What is the thickness of the walls of the alveoli?
One cell thick
Where does the exchange of gases take place in the respiratory system?
Alveoli
What is the approximate surface area of the respiratory surface?
70 square meters
What surrounds the alveoli to facilitate gas exchange?
Microscopic capillaries
Through which part of the respiratory system does air from the atmosphere reach the alveoli?
Conducting airway
Study Notes
Breathing
- Air from the atmosphere passes through the conducting airway and reaches the alveoli
- Alveoli walls are only one cell thick, forming the respiratory surface
- The respiratory surface covers an area of approximately 70 square meters
- The respiratory surface is where the exchange of gases takes place
- Microscopic capillaries surround the alveoli
Learn about the process of breathing and how air moves through the conducting airway to the alveoli, where gas exchange takes place.
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