Multiple Choice
At the end of inspiration, the intrapulmonary pressure is equal to ____________.
22. The Respiratory System
Ventilation
Back22. The Respiratory System
Ventilation
- Open Question
Predict what would happen to the tidal volume and inspiratory reserve volume if the phrenic nerves were severed. Which muscles would contract to try to compensate for this?
- Multiple Choice
Why does air rush into the lungs during an inhale or inspiration?
- Multiple Choice
When the volume of air in the lungs is the greatest:
- 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
Which muscle is likely to be contracting while blowing up a balloon?
- 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.