12 Questions
Which component of respiration involves the inflow and outflow of air between the atmosphere and the lung alveoli?
Pulmonary ventilation
What is the main function of respiration?
To provide oxygen to the tissues
How are the lungs expanded and contracted?
By downward and upward movement of the diaphragm
What is the normal pleural pressure at the beginning of inspiration?
-5 centimeters of water
During normal inspiration, what happens to the pleural pressure?
It becomes more negative
What does the diffusion component of respiration involve?
Movement of oxygen and carbon dioxide between alveoli and blood
What is defined as the movement of gas molecules across a membrane?
Respiration
What is the ultimate importance of pulmonary ventilation?
To facilitate gas exchange in the lungs
What is the effect of a slight negative alveolar pressure during normal inspiration?
Pulls air into the lungs
Which of the following is NOT a pulmonary cause of disturbances in alveolar ventilation?
Guillain-Barré syndrome
What is the most common cause of hypoxemia as per the text?
Upper airway obstruction
What was one of the earliest attempts to restore breathing?
Placing a reed in the throat and blowing into the lungs
Test your knowledge about the main functions and major components of the respiratory system, including pulmonary ventilation, gas exchange, oxygen transport, and regulation of breathing.
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