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Questions and Answers
Which of the following is the main site of gas exchange in the lungs?
Which of the following is the main site of gas exchange in the lungs?
- Trachea
- Alveoli (correct)
- Diaphragm
- Bronchi
What is the role of the diaphragm in breathing?
What is the role of the diaphragm in breathing?
- To regulate the pH of the blood
- To filter air in the respiratory system
- To help with the inhalation and exhalation processes (correct)
- To pump blood to the lungs
Which of the following is NOT a respiratory disorder?
Which of the following is NOT a respiratory disorder?
- Emphysema
- Bronchitis
- Hemophilia (correct)
- Asthma
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Study Notes
Respiratory System
- The main site of gas exchange in the lungs is the alveoli, where oxygen is absorbed into the blood and carbon dioxide is removed.
Diaphragm's Role
- The diaphragm is a dome-shaped muscle that separates the chest cavity from the abdominal cavity and plays a crucial role in breathing by contracting and relaxing to expand and deflate the lungs.
Respiratory Disorders
- Emphysema, chronic bronchitis, and asthma are all respiratory disorders, but arthritis is NOT a respiratory disorder; it is a joint disorder.
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