Asked by Jessica Cabrera on Jun 22, 2024
Verified
Which of the following statements concerning thoracic volume is true?
A) As thoracic volume increases, alveolar pressure (Palv) increases.
B) In expiration, the thoracic volume increases.
C) Constriction of bronchioles assists breathing.
D) As alveolar volume increases, alveolar pressure (Palv) decreases.
E) Pressure is directly proportional to volume.
Thoracic Volume
Refers to the volume of the thoracic cavity, which affects respiratory function and is influenced by breathing.
Alveolar Pressure
The pressure of air within the alveoli of the lungs, crucial for the process of breathing in and out.
- Familiarize yourself with the basic physiological tenets that control the mechanisms of breathing and gas exchange in the alveoli.
Verified Answer
PM
Perla MartosJun 29, 2024
Final Answer :
D
Explanation :
As alveolar volume increases, the pressure inside the alveoli decreases according to Boyle's law, which states that pressure and volume are inversely proportional in a closed system at constant temperature. This principle is fundamental to the mechanics of breathing.
Learning Objectives
- Familiarize yourself with the basic physiological tenets that control the mechanisms of breathing and gas exchange in the alveoli.