Asked by Scott Briggs on Jul 27, 2024
Verified
When the inspiratory muscles contract,
A) thoracic volume increases.
B) pleural pressure increases.
C) the alveolar pressure increases.
D) expiration occurs.
E) thoracic volume decreases.
Inspiratory Muscles
Muscles involved in inhalation, primarily the diaphragm and intercostal muscles, which expand the thoracic cavity.
Pleural Pressure
The pressure within the pleural cavity, which can influence lung expansion and contraction.
Alveolar Pressure
The pressure within the alveoli of the lungs, which influences breathing and gas exchange.
- Acquire insight into the fundamental physiological laws governing the process of breathing and the movement of gases in the alveoli.
Verified Answer
PM
Priscilla Mendez
Jul 31, 2024
Final Answer :
A
Explanation :
When the inspiratory muscles contract, such as the diaphragm and the external intercostal muscles, the thoracic cavity's volume increases. This expansion leads to a decrease in pressure within the lungs compared to the atmospheric pressure, allowing air to flow into the lungs.
Learning Objectives
- Acquire insight into the fundamental physiological laws governing the process of breathing and the movement of gases in the alveoli.
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