Exam 22: The Respiratory System

The Hering- Breuer reflex is a potentially dangerous response that may cause overinflation of the lung.

The Bohr effect refers to the unloading of in a RBC due to declining pH.

Inspiratory capacity is .

Which of the choices below describes the forces that act to pull the lungs away from the thorax wall and thus collapse the lungs?

Briefly differentiate between atmospheric pressure, intrapulmonary pressure, and intrapleural pressure. Which of these is always negative in a healthy individual during normal breathing? What happens if intrapleural pressure becomes equal to atmospheric pressure?

Unlike inspiration, expiration is a passive act because no muscular contractions are involved. Expiration, however, depends on two factors. Which of the choices below lists those two factors?

John has undergone surgery and has developed pneumonia. He also has a history of emphysema. Which symptoms and signs would the nurse expect to find?

Smoking diminishes ciliary action and eventually destroys the cilia.

In chronic bronchitis, mucus production is decreased and this leads to the inflammation and fibrosis of the mucosal lining of the bronchial tree.

Ventilation perfusion coupling means that more blood flows past functional alveoli than past nonfunctional alveoli.

Figure 22.1Using Figure 22.1, match the following: -Carina of trachea.

The largest amount of carbon dioxide is transported in the bloodstream in the form of carbonic anhydrase.

Gas emboli may occur because a .

Figure 22.1Using Figure 22.1, match the following: -Larynx.

The statement, "in a mixture of gases, the total pressure is the sum of the individual partial pressures of gases in the mixture" paraphrases .

The nose serves all the following functions except .

Tidal volume is air .

Type II alveolar cells secrete _ _.

The most powerful respiratory stimulus for breathing in a healthy person is .

A premature baby usually has difficulty breathing. However, the respiratory system is developed enough for survival by _.