Diffusion is the spontaneous movement of gases without the use of any energy or effort and requires a concentration/pressure gradient.
A. 
True
B. 
False
2.
Oxygen molecules move (diffuse) from an area of (____________) in the alveoli of the lungs to an area of (____________) into the blood where they bind to red blood cells to oxygenate the body.
A. 
Higher PO2; Lower PO2
B. 
Lower PO2; Higher PO2
C. 
Moderate PO2; Mild PO2
D. 
Mild PO2; Moderate PO2
3.
Diffusion capacity is a measure of how well oxygen and carbon dioxide are transferred between the lung and the blood.
A. 
True
B. 
False
4.
What is the primary function of hemoglobin?
A. 
Transport carbon dioxide
B. 
Transport oxygen
C. 
Remove nitrogen
D. 
Remove carbon monoxide
5.
As air travels through the respiratory tract and becomes humidified (water is added), the PO2:
A. 
Increases
B. 
Decreases
C. 
Stays the same
6.
Which of the following does NOT determine partial pressure of O2 and CO2 in the lungs?
A. 
Atmospheric pressure of outside air
B. 
Atmospheric pressure on the moon
C. 
Rate of alveolar ventilation and perfusion
D. 
Humidified air by the upper airway
7.
As you expire air the value measured with a PFT device of the PO2 will __________ and the measured value of PCO2 will __________.
A. 
Increase; increase
B. 
Increase; decrease
C. 
Decrease; increase
D. 
Decrease; decrease
8.
Diffusion of gas across a fluid membrane (alveolar membrane) can be affected by all of the following EXCEPT:
A. 
Difference in partial pressures of gases
B. 
Surface area of the membrane
C. 
Thickness of the membrane
D. 
Color of the membrane
9.
With COPD, some bronchioles are obstructed leaving the alveoli beyond the obstructions unventilated. (no air flow, some blood flow)
A. 
True
B. 
False
10.
To convert carbon monoxide-diffusing capacity to oxygen-diffusion capacity, the value is multiplied by a factor of __________.
Here are the Oxygenation quiz questions and answers. Oxygenation can be understood as the addition of oxygen. This addition is into any chemical or physical system, even in the human body. The word is also used to...
Questions: 10 | Attempts: 13669 | Last updated: May 10, 2022
Sample Question
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Questions: 21 | Attempts: 2109 | Last updated: Mar 22, 2022
Sample Question
Okay, let's start with some basic equipment. You have a regulator containing a Bourdon gauge flowmeter. What type of reducing valve is employed in this regulator?