20 Anatomy Flashcards
(3 cards)
1
Q
What is the main function of the alveoli?
A
The main function of the alveoli is gas exchange, allowing oxygen to enter the blood and carbon dioxide to be expelled.
2
Q
How does the diaphragm contract during inhalation?
A
During inhalation, the diaphragm contracts and moves downward, increasing the volume of the thoracic cavity and decreasing pressure, which allows air to flow into the lungs.
3
Q
What is the role of surfactant in the alveoli?
A
Surfactant reduces surface tension within the alveoli, preventing them from collapsing and ensuring efficient gas exchange.
