Respiratory 2

Question 1

A drop in pH would ____ the affinity of hemoglobin for O2.

a. lower
b. raise

Answer 1

a. lower the affinity of hemoglobin for O2.

Question 2

What is the major benefit of converting most CO2 into H2CO3 when it enters the blood?

a. H2CO3 is a liquid, it won’t form bubbles
b. H2CO3 is less reactive than CO2, it is safer

Answer 2

a. H2CO3 is a liquid, it won’t form bubbles

Question 3

The molecular formula for carbonic acid is:

a. H2CO3
b. C6H12O6
c. HCl
d. COOH

Answer 3

a. H2CO3

Question 4

Carbonic acid forms when which of the following two molecules react:

O2
NH4
CO2
NaCl
H2O
HCl

Answer 4

CO2 and H2O

Question 5

During ventilation-perfusion coupling, a rise in blood CO2 levels leads to a ______ of the bronchioles and ______ of the arterioles.

Answer 5

bronchodilation ; vasoconstriction

Question 6

A drop in blood CO 2 levels would lead to a _______ of the bronchioles and _____ of the arterioles.

Answer 6

bronchoconstriction ; vasodilation

Question 7

Which of the following could you measure with a spirometer?
Expiratory reserve volume
Anatomical dead space
Vital capacity
Functional reserve capacity
Total lung capacity

Answer 7

Expiratory reserve volume

Vital capacity

Question 8

causes respiration to completely cease during sleep, to the point of death:

Answer 8

SIDS

Question 9

inflammation of the bonchi:

Answer 9

bronchitis

Question 10

causes excessive parasympathetic tone to the bronchioles:

Answer 10

asthma

Question 11

increases the risk of cancer of the pleura:

Answer 11

asbestosis

Question 12

causes difficulty with exhalation:

Answer 12

emphysema

Question 13

How would you describe the mucus found in the lungs of a child with cystic fibrosis?
the mucus is thick and dry, as well as prone to infections

Answer 13

The mucus found in the lungs of a child with cystic fibrosis would be very thick, dry and sticky due to the accumulation of chloride (that water and cilia would otherwise help with during normal mucus production and function) which makes the child more prone to infections.

Question 14

What values do you use to calculate total lung capacity:

a. _____ /b. _____ x 100%

= Total lung capacity (FVC)

Answer 14

a. actual FVC

b. predicted FVC

Question 15

What values do you use to calculate percentage of FEV1:

a. _______ /b. _______ x 100%

= percentage of FEV1

Answer 15

a. actual FEV1

b. predicted FEV1