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Questions and Answers
Which of the following is a major component of respiration?
Which of the following is a major component of respiration?
- Diffusion of oxygen between alveoli and blood (correct)
- Transport of nutrients in the blood
- Digestion of food in the stomach
- Regulation of heart rate
What is the main function of pulmonary ventilation?
What is the main function of pulmonary ventilation?
- Regulate heart rate
- Provide oxygen to the tissues (correct)
- Transport CO2 in the blood
- Digest food in the stomach
How are the lungs expanded during normal quiet breathing?
How are the lungs expanded during normal quiet breathing?
- By elevation of the ribs
- By downward movement of the diaphragm (correct)
- By upward movement of the diaphragm
- By contraction of the chest wall muscles
What causes the compression of the lungs and expulsion of air during expiration?
What causes the compression of the lungs and expulsion of air during expiration?
What causes the increase or decrease in the anteroposterior diameter of the chest cavity?
What causes the increase or decrease in the anteroposterior diameter of the chest cavity?
Which muscle is primarily responsible for normal quiet breathing?
Which muscle is primarily responsible for normal quiet breathing?
Which muscle is the most important for raising the rib cage during inspiration?
Which muscle is the most important for raising the rib cage during inspiration?
What is the main function of the abdominal recti muscles during expiration?
What is the main function of the abdominal recti muscles during expiration?
During normal inspiration, what happens to the pleural pressure?
During normal inspiration, what happens to the pleural pressure?
What is the normal pleural pressure at the beginning of inspiration?
What is the normal pleural pressure at the beginning of inspiration?
What does alveolar pressure decrease to during normal inspiration?
What does alveolar pressure decrease to during normal inspiration?
What forces the 0.5 liter of air out of the lungs during expiration?
What forces the 0.5 liter of air out of the lungs during expiration?
Which muscles are classified as muscles of expiration?
Which muscles are classified as muscles of expiration?
What is the function of the internal intercostal muscles?
What is the function of the internal intercostal muscles?
What is the role of the abdominal muscles during heavy breathing?
What is the role of the abdominal muscles during heavy breathing?
What maintains a slight suction between the visceral surface of the lung pleura and the parietal pleural surface of the thoracic cavity?
What maintains a slight suction between the visceral surface of the lung pleura and the parietal pleural surface of the thoracic cavity?
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