Exam 36: Ventilation

Match each type of breathing with its corresponding definition. -Cycles of gradually increasing tidal volume for several breaths followed by several breaths with gradually decreasing tidal volume

Which explains the relationship between the gas pressure gradient of the atmosphere and the alveolar air that allows inhalation?

A man is at the bottom of a 20-foot tank filled with water and can breathe only through a rigid 15-foot tube. Using the concept of anatomical dead air space, explain why the man may soon begin to suffer from oxygen deprivation.

George, a heavy smoker for 30 years, has developed a decreased expiratory reserve volume and a large, barrel-shaped chest cavity. What is his probable diagnosis?

Anatomical dead air space and physiological dead air space are interchangeable terms.

Pulmonary ventilation is a technical term for what most people call breathing.

Which muscle is not used in quiet inspiration?

For air to remain in the lungs, the pressure in the lungs must be equal to or less than atmospheric pressure.

Boyle's law states that the volume of a gas varies _____ with pressure at a _____ temperature.

A poorly perfused but well-ventilated part of the lung wastes blood.

Normal tidal volume is about 500 ml.

A person who is trapped underwater for a long enough time will drown, and this indicates that the cerebral cortex does not have complete control of breathing.

The tendency of the lungs and thorax to return to their preinspiration volume is a physical phenomenon called elastic recoil.

Match each type of breathing with its corresponding definition. -Repeated sequences of deep gasps and apnea; indicates increased intracranial pressure

Match each pulmonary volume with its corresponding description or definition. -Typical volume of air moved into and out of the lungs during normal, quiet breathing

Which of the following will cause brief apnea?

A sudden rise in arterial blood pressure will:

A healthy respiratory system will still contain a certain amount of dead air space.

Contraction of the diaphragm alone can produce quiet respiration.

Input from the apneustic center in the pons inhibits the inspiratory center, causing a decrease in the length and depth of inspiration.