Podcast
Questions and Answers
During inspiration, the ______ contracts moving down.
During inspiration, the ______ contracts moving down.
diaphragm
The ribs move up and out as the ______ muscles contract.
The ribs move up and out as the ______ muscles contract.
intercostal
As a result, air is drawn into the lungs through the ______.
As a result, air is drawn into the lungs through the ______.
trachea
During exhalation, what happens to the diaphragm?
During exhalation, what happens to the diaphragm?
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What happens to the ribs during exhalation?
What happens to the ribs during exhalation?
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What happens to the cavity around the lungs during inspiration?
What happens to the cavity around the lungs during inspiration?
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What happens to air pressure during exhalation?
What happens to air pressure during exhalation?
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Study Notes
Inspiration
- Diaphragm contracts, moving down
- Ribs move up and out due to intercostal muscles contraction
- Cavity around lungs increases, reducing air pressure
- Air is drawn into lungs through trachea, causing them to inflate
Exhalation
- Diaphragm relaxes and flattens
- Ribs move down and in as intercostal muscles relax
- Cavity around lungs decreases, increasing air pressure
- Air is forced out of lungs through trachea, causing them to deflate
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Description
Test your knowledge on the process of inspiration and how the diaphragm and intercostal muscles work together to draw air into the lungs. Learn about the changes in air pressure and the role of the trachea in lung inflation.
