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WorksheetsRespiration 2
Total questions: 11
Worksheet time: 6mins
Name
Class
Date
1.
The partial pressure of O2 in the atmosphere is:
a)
21% of 760 mm Hg
b)
78% of 1 ATM
c)
29.92" of Hg
d)
.04% of 15 lbs./in2
2.
Boyle's Law states:
a)
when volume increases, pressure increases
b)
when volume decreases, pressure decreases
c)
when volume increase, pressure decreases
3.
Which of the following is true regarding inspiration?
a)
It is a passive process
b)
The thoracic cavity enlarges
c)
Pressure is greater in the alveoli than atmosphere
d)
Abdominal wall muscles contract
4.
What is true regarding expiration?
a)
It is an active process
b)
The diaphragm contracts
c)
The thoracic cavity enlarges
d)
Is due to elastic recoil of lung tissues
5.
What makes up the respiratory membrane?
a)
walls of alveolus, capillary, and basement membrane
b)
alveolar duct and sac
c)
bronchi, bronchiole, and alveolar duct
d)
stratified squamous epithelium
6.
What is the function of surfactant?
a)
Humidifies the air in alveoli
b)
Speeds diffusion of gasses through alveolar walls
c)
Resists alveolar collapse
d)
Increases the surface area of the alveolus
7.
What allows both O2 and CO2 to travel in the blood?
a)
Bicarbonic acid
b)
Hemoglobin
c)
Phospholipid
d)
Chloride
8.
What is the typical pO2 in the alveoli and tissues?
a)
40 mm Hg vs 104 mm Hg
b)
104 mm Hg vs 95 mm Hg
c)
104 mm Hg vs 40 mm Hg
d)
45 mm Hg vs 40 mm Hg
9.
How is most CO2 carried in the blood?
a)
Combined with chloride ions
b)
In the form of bicarbonate ions
c)
Combined with hemoglobin
d)
Dissolved in plasma
10.
What neural system controls forced breathing?
a)
Ventral Respiratory Group
b)
Inferior Respiratory Group
c)
Dorsal Respiratory Group
d)
Superior Respiratory Group
11.
What stimulates the central chemoreceptors?
a)
PO2 and pH
b)
PCO2 and pH
c)
pH only
d)
PO2 only
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