Podcast
Questions and Answers
Which of the following describes the interaction between the lung and chest wall during expiration?
Which of the following describes the interaction between the lung and chest wall during expiration?
- The lung and chest wall both recoil outward
- The lung recoils inward while the chest wall recoils outward (correct)
- The lung and chest wall both recoil inward
- The lung and chest wall do not interact during expiration
What is the intrapleural pressure in the pleural cavity under normal conditions?
What is the intrapleural pressure in the pleural cavity under normal conditions?
- 0cmH2O
- +5cmH2O
- -5cmH2O (correct)
- -10cmH2O
What happens to the lung during pneumothorax?
What happens to the lung during pneumothorax?
- The lung remains unaffected
- The lung becomes more elastic
- The lung collapses (correct)
- The lung expands
What is the purpose of lung expansion in creating a pressure gradient for air flow?
What is the purpose of lung expansion in creating a pressure gradient for air flow?
Which type of pneumothorax is characterized by the accumulation of air in the pleural cavity without any external injury or trauma?
Which type of pneumothorax is characterized by the accumulation of air in the pleural cavity without any external injury or trauma?
Which of the following is NOT a general sign or symptom of pneumothorax?
Which of the following is NOT a general sign or symptom of pneumothorax?
What clinical result is dependent on the degree of collapse on the affected side in pneumothorax?
What clinical result is dependent on the degree of collapse on the affected side in pneumothorax?
Which condition can be a potential cause of pneumothorax?
Which condition can be a potential cause of pneumothorax?
Which of the following is a common sign of haemothorax?
Which of the following is a common sign of haemothorax?
What happens if haemothorax is left untreated?
What happens if haemothorax is left untreated?
What percentage of a person's blood volume can the thorax hold?
What percentage of a person's blood volume can the thorax hold?
What is the most common cause of haemothorax?
What is the most common cause of haemothorax?
Which symptom is commonly associated with haemothorax?
Which symptom is commonly associated with haemothorax?
What clinical finding indicates tracheal deviation in a patient with haemothorax?
What clinical finding indicates tracheal deviation in a patient with haemothorax?
How does haemothorax limit the heart's ability to fill with blood?
How does haemothorax limit the heart's ability to fill with blood?
Which of the following contributes to the elastic recoil of the lung along with the elastin and collagen fibers found in the alveolar wall?
Which of the following contributes to the elastic recoil of the lung along with the elastin and collagen fibers found in the alveolar wall?
According to Laplace's law, which of the following has a high collapsing pressure?
According to Laplace's law, which of the following has a high collapsing pressure?
What is the relationship between the collapsing pressure and the surface tension according to Laplace's law?
What is the relationship between the collapsing pressure and the surface tension according to Laplace's law?
What effect does surface tension have on the alveoli?
What effect does surface tension have on the alveoli?
Why does an alveolus with a high collapsing pressure require more force to keep it open for gas exchange?
Why does an alveolus with a high collapsing pressure require more force to keep it open for gas exchange?
Which of the following is NOT a component of pulmonary surfactant?
Which of the following is NOT a component of pulmonary surfactant?
What is the main function of pulmonary surfactant?
What is the main function of pulmonary surfactant?
What is the role of alveolar interdependence in stabilizing the alveoli?
What is the role of alveolar interdependence in stabilizing the alveoli?
What happens if a newborn lacks pulmonary surfactant?
What happens if a newborn lacks pulmonary surfactant?
What is the main factor responsible for the pressure difference between smaller and larger alveoli according to Laplace's law?
What is the main factor responsible for the pressure difference between smaller and larger alveoli according to Laplace's law?
Which of the following best describes the role of interdependence in preventing alveolar collapse?
Which of the following best describes the role of interdependence in preventing alveolar collapse?
What is the main cause of alveolar collapse in isolated alveoli?
What is the main cause of alveolar collapse in isolated alveoli?
What happens to alveoli with a relative lack of pulmonary surfactant?
What happens to alveoli with a relative lack of pulmonary surfactant?
Which type of cells produce pulmonary surfactant?
Which type of cells produce pulmonary surfactant?
Which factor is responsible for preventing alveolar collapse in the presence of varying alveolar sizes?
Which factor is responsible for preventing alveolar collapse in the presence of varying alveolar sizes?
Which factor contributes the most to the work of breathing during inspiration?
Which factor contributes the most to the work of breathing during inspiration?
What is the conventional measure of the ability of distension of the lungs?
What is the conventional measure of the ability of distension of the lungs?
Which condition is characterized by increased lung compliance and flabby lungs?
Which condition is characterized by increased lung compliance and flabby lungs?
What factor decreases lung compliance?
What factor decreases lung compliance?
Which condition is characterized by decreased lung compliance and rigid lungs?
Which condition is characterized by decreased lung compliance and rigid lungs?
What is the relationship between lung compliance and elasticity?
What is the relationship between lung compliance and elasticity?
Which factor contributes to decreased lung compliance?
Which factor contributes to decreased lung compliance?
What effect does surface tension have on lung compliance?
What effect does surface tension have on lung compliance?
Which factor directly affects lung compliance by altering intrapleural pressure?
Which factor directly affects lung compliance by altering intrapleural pressure?
Which factor contributes to increased lung compliance in the lower section of the lungs?
Which factor contributes to increased lung compliance in the lower section of the lungs?
What effect does pulmonary congestion or pulmonary edema have on lung compliance?
What effect does pulmonary congestion or pulmonary edema have on lung compliance?
Severe kyphoscoliosis can lead to significant rib distortion and respiratory dysfunction. What happens to respiratory impairment with age?
Severe kyphoscoliosis can lead to significant rib distortion and respiratory dysfunction. What happens to respiratory impairment with age?
Which gender is more affected by restrictive lung disease in terms of both prevalence and severity?
Which gender is more affected by restrictive lung disease in terms of both prevalence and severity?
Which of the following conditions is characterized by the accumulation of air in the pleural cavity without any external injury or trauma?
Which of the following conditions is characterized by the accumulation of air in the pleural cavity without any external injury or trauma?
What physical examination feature is important in identifying hemothorax?
What physical examination feature is important in identifying hemothorax?
How is compliance defined?
How is compliance defined?
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