객관식
Which of the following are structural features of the trachea?
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22. The Respiratory System
Introduction to Lung Physiology
객관식
Which of the following occurs during inhalation?
A
The pressure inside the lungs increases above atmospheric pressure.
B
The intercostal muscles relax, decreasing thoracic volume.
C
The diaphragm relaxes and moves upward.
D
The diaphragm contracts and moves downward.
검증된 단계별 안내1
Understand the process of inhalation: Inhalation is the process of drawing air into the lungs, which involves changes in pressure and volume within the thoracic cavity.
Identify the role of the diaphragm: During inhalation, the diaphragm, a dome-shaped muscle located at the base of the lungs, plays a crucial role by contracting.
Describe the movement of the diaphragm: When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity.
Explain the pressure changes: As the thoracic volume increases, the pressure inside the lungs decreases below atmospheric pressure, allowing air to flow into the lungs.
Clarify the role of intercostal muscles: The external intercostal muscles also contract during inhalation, lifting the ribs and further increasing thoracic volume, which aids in reducing lung pressure.
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