Multiple Choice
Individuals with COPD (chronic obstructive pulmonary disorder) have degraded elastin protein, causing their lungs to have less recoil. How would this affect intrapleural pressure and why?
22. The Respiratory System
Pressure in the Lungs and Pleural Cavity
Back22. The Respiratory System
Pressure in the Lungs and Pleural Cavity
- Multiple Choice
True or false: if false choose the answer that best corrects the statement.
In healthy lungs, the intrapulmonary pressure is always lower than the intrapleural pressure.
- Open QuestionThe detergent-like substance that keeps the alveoli from collapsing between breaths because it reduces the surface tension of the water film in the alveoli is calleda. lecithin,b. bile,c. surfactant,d. reluctant.
- Open Question
Explain what would happen to the pressure inside a cylinder if you decreased its volume, according to Boyle's law.
- Open QuestionMultiple ChoiceMore than one choice may apply.Which of the following represents intrapleural pressure?a. b. c.
- Multiple Choice
Pleural effusion is a condition where fluid accumulates in the pleural cavity. Which pressure or pressures would you expect to be most directly impacted by this fluid accumulation?
- Open Questiona. Define hyperventilation.b.If you hyperventilate, do you retain or expel more carbon dioxide?c. What effect does hyperventilation have on blood pH?
- Open Question
What happens to the metabolic rate of skeletal muscle tissue during exercise? What waste products are produced from metabolic reactions? How and why does this affect your rate of ventilation during exercise?
- Open QuestionUnder ordinary circumstances, the inflation reflex is initiated bya. noxious chemicals,b. the ventral respiratory group,c. overinflation of the alveoli and bronchioles,d. the pontine respiratory centers.
- Open QuestionMultiple ChoiceMore than one choice may apply.During inspiration, intrapulmonary pressure isa. greater than atmospheric pressure.b. less than atmospheric pressure.c. greater than intrapleural pressure.d. less than intrapleural pressure.
- Open QuestionMultiple ChoiceMore than one choice may apply.Which of the following changes will accompany the loss of lung elasticity associated with aging?a. Increase in tidal volumeb. Increase in inspiratory reserve volumec. Increase in residual volumed. Increase in vital capacity
- Open QuestionA member of the 'Blues' gang was rushed into an emergency room after receiving a knife wound in the left side of his thorax. The diagnosis was pneumothorax and a collapsed lung. Explain exactlya. why the lung collapsed, andb. why only one lung (not both) collapsed.
- Open QuestionDescribe the functional relationships between volume changes and gas flow into and out of the lungs.
- Open QuestionWhen the inspiratory muscles contract,a. the size of the thoracic cavity increases in diameter,b. the size of the thoracic cavity increases in length,c. the volume of the thoracic cavity decreases,d. the size of the thoracic cavity increases in both length and diameter.