Question 1

In a patient with acidosis, the nurse would expect the oxyhemoglobin dissociation curve to shift:

Accepted Answer

Acidosis causes the oxyhemoglobin dissociation curve to shift to the right, facilitating the release of more oxygen to the tissues.

Question 2

_____ seconds is required for oxygen (O₂) concentration to equilibrate (equalize) across the alveolocapillary membrane.

Accepted Answer

The answer of _____ seconds is required for oxygen (O₂)...

Question 3

What is the partial pressure of oxygen in the lung given the following conditions? Percentage of oxygen in air: 20
Barometric pressure: 700 mm Hg

Accepted Answer

The answer of What is the partial pressure of oxygen...

Question 4

At sea level, the partial pressure of oxygen is approximately ___% (round to the nearest whole number).

Accepted Answer

The answer of At sea level, the partial pressure of...

Question 5

____% of oxygen (O₂) enters the bloodstream bound to hemoglobin.

Accepted Answer

The answer of ____% of oxygen (O₂) enters the bloodstream...

Question 6

Pulmonary function tests reveal that an 80-year-old dyspneic patient has an increase in residual volume.A nurse suspects the most likely cause of the increased residual volume is _____ in lung compliance.

Accepted Answer

An increase in lung compliance, often due to conditions like emphysema, leads to an increase in residual volume as the lungs lose their elastic recoil and air remains trapped.

Question 7

What physiology is present at the base of the lungs?

Accepted Answer

At the base of the lungs, arterial perfusion pressure exceeds alveolar gas pressure, allowing for better blood flow and gas exchange compared to the apex.

Question 8

Diffusion of respiratory gases takes place at the:

Accepted Answer

The diffusion of respiratory gases occurs at the alveolocapillary membrane, where oxygen and carbon dioxide are exchanged between the alveoli and the blood in the capillaries.

Question 9

Carbon dioxide (CO₂) is mainly transported in the blood:

Accepted Answer

Carbon dioxide is primarily transported in the blood in the form of bicarbonate ions (HCO3-) after reacting with water in red blood cells, facilitated by the enzyme carbonic anhydrase.

Question 10

A patient asks how oxygen is transported in the body.The nurse's best response is that most oxygen (O₂) is transported:

Accepted Answer

Most oxygen is transported in the body bound to hemoglobin in red blood cells.

Question 11

While auscultating a patient's lungs, a nurse recalls the alveoli in the apices of the lungs are _____ than alveoli in the bases.

Accepted Answer

Alveoli in the apices of the lungs are larger than those in the bases due to the effects of gravity and the distribution of pleural pressure, which is more negative at the apex, leading to greater alveolar expansion.

Question 12

Which structures may be found in the walls of the respiratory bronchi? (Select all that apply.)

Accepted Answer

Smooth muscle, goblet cells, ciliated cells, and an epithelial lining are all found in the walls of the respiratory bronchi.

Quiz 28: Structure and Function of the Pulmonary System

In a patient with acidosis, the nurse would expect the oxyhemoglobin dissociation curve to shift:

_____ seconds is required for oxygen (O2) concentration to equilibrate (equalize) across the alveolocapillary membrane.

What is the partial pressure of oxygen in the lung given the following conditions? Percentage of oxygen in air: 20 Barometric pressure: 700 mm Hg