Podcast
Questions and Answers
What role do the intercostal muscles play during inhalation?
What role do the intercostal muscles play during inhalation?
- They pull the diaphragm down to increase pressure.
- They relax to allow the diaphragm to contract.
- They have no role in the process of inhalation.
- They contract, pulling the ribs up and out. (correct)
Which statement accurately describes the process of exhalation?
Which statement accurately describes the process of exhalation?
- The intercostal muscles relax, allowing the ribcage to fall. (correct)
- Oxygen diffuses from the blood into the alveoli.
- Carbon dioxide diffuses from the alveoli into the blood.
- The diaphragm contracts, increasing the chest cavity volume.
What occurs at the alveoli during gas exchange?
What occurs at the alveoli during gas exchange?
- Oxygen diffuses into the blood from the alveoli. (correct)
- Carbon dioxide enters the bloodstream from the alveoli.
- Oxygen leaves the blood and enters the alveoli.
- Both oxygen and carbon dioxide are expelled from the blood.
How does the diaphragm change pressure during inhalation?
How does the diaphragm change pressure during inhalation?
What is the function of the bronchi in the respiratory system?
What is the function of the bronchi in the respiratory system?
Flashcards
Bronchi
Bronchi
Tubes that branch into smaller tubes called alveoli. They carry air to the lungs.
Alveoli
Alveoli
Tiny air sacs in the lungs where gas exchange happens. Oxygen enters the blood and carbon dioxide leaves.
What happens to the diaphragm during inhalation?
What happens to the diaphragm during inhalation?
The diaphragm muscle contracts and flattens, increasing the space in the chest cavity, causing air to rush in.
What happens to the intercostal muscles during exhalation?
What happens to the intercostal muscles during exhalation?
Signup and view all the flashcards
Gas Exchange
Gas Exchange
Signup and view all the flashcards
