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WorksheetsRespiratory Exam 1
Total questions: 42
Worksheet time: 21mins
Name
Class
Date
1.
The parietal pleura covers the surface of the lungs
a)
true
b)
false
2.
Intrapulmonary pressure increases as the diaphragm contracts
a)
true
b)
false
3.
Lung compliance increases as the amount of surfactant in the lung increases
a)
true
b)
false
4.
Contraction of the internal intercostal muscles expands the thoracic cavity
a)
true
b)
false
5.
The maximum amount of gas that can be inspired after a normal tidal expiration is the inspiratory capacity
a)
true
b)
false
6.
Sympathetic agonists could be utilized to treat asthma
a)
true
b)
false
7.
The partial pressure of oxygen decreases at high altitude because the amount of oxygen in the air is decreased
a)
true
b)
false
8.
Breathing 100% oxygen will increase the total oxygen content of whole blood by 5 times
a)
true
b)
false
9.
Arterial blood pH is indirectly proportional to the partial carbon dioxide pressure of arterial blood
a)
true
b)
false
10.
Central chemoreceptors respond to changes in arterial oxygen and carbon dioxide
a)
true
b)
false
11.
Which of the following is NOT part of the conducting zone?
a)
primary bronchi, pharynx
b)
trachea
c)
alveoli
d)
nose
12.
Which of the following is NOT a function of the conducting zone?
a)
gas exchange
b)
filtering and cleaning the air
c)
warming and humidifying the air
d)
All of the choices are functions
13.
Intrapleural pressure __________ during expiration.
a)
increases
b)
decreases
c)
remains unchanged
14.
During inspiration
a)
alveolar pressure exceeds atmospheric pressure
b)
transpulmonary pressure increases
c)
the diaphragm relaxes
d)
intrapulmonary pressure is less than atmospheric pressure
15.
What law states that the pressure of a given quantity of gas is inversely proportional to its volume?
a)
Boyle's Law
b)
Charles Law
c)
Dalton's Law
d)
Henry's Law
16.
A measure of the distensibility of the lungs is
a)
compliance.
b)
elasticity
c)
surface tension
d)
None of the choices are correct
17.
The tendency of the lungs to return to their initial size after stretching is
a)
compliance.
b)
elasticity
c)
surface tension
d)
None of the choices are correct
18.
According to who's law, is the pressure in a small alveolus greater than a large alveolus as long as the surface tension is equal?
a)
Boyle's law
b)
Dalton's law
c)
Laplace's law
d)
Henry's law
19.
Quiet expiration is caused by
a)
contraction of the external intercostals
b)
contraction of the internal intercostals
c)
lung recoil and increased intrapulmonary pressure
d)
contraction of the scalenes
20.
Quiet inspiration will ____ thoracic and lung volume and _____ intrapulmonary pressure
a)
increase, increase
b)
increase, decrease
c)
decrease, increase
d)
decrease, decrease
21.
Which of the following is true?
a)
Blood in the pulmonary veins is low in oxygen
b)
Blood in the pulmonary veins is high in carbon dioxide
c)
The oxygen concentration of inspired air is higher than that of alveolar air
d)
All of the choices are true
22.
The volume of gas inspired or expired in a quiet respiration cycle is the
a)
tidal volume
b)
vital capacity
c)
inspiratory reserve volume
d)
residual volume
23.
The total amount of gas in the lungs after a maximum inspiration is the
a)
vital capacity
b)
total lung capacity
c)
tidal volume
d)
functional residual capacity
24.
Gas X makes up 15% of a gas mix, at 760 mm Hg, the partial pressure of gas X would be
a)
11400 mm Hg
b)
1140 mm Hg
c)
114 mm Hg
d)
646 mm Hg
25.
The amount of a given gas dissolved in the blood
a)
is directly proportional to the partial pressure of the gas
b)
increases at higher altitudes
c)
is described primarily by Boyle's law
d)
All of the choices are correct
26.
Normal arterial PO2 is
a)
40 mm Hg
b)
46 mm Hg
c)
85 mm Hg
d)
100 mm Hg
27.
Normal alveolar PO2 is
a)
40 mm Hg
b)
46 mm Hg
c)
100 mm Hg
d)
105 mm Hg
28.
Normal venous PCO2 is
a)
40 mm Hg
b)
46 mm Hg
c)
100 mm Hg
d)
105 mm Hg
29.
The ventilation/perfusion ratio
a)
is lowest at the apex of the lungs
b)
increases when blood flow is decreased
c)
decreases when ventilation is increased
d)
increases due to dilation of the pulmonary arterioles
30.
Blood flow is greatest at the _____ of the lungs and perfusion is greatest at the _____ of the lungs
a)
apex; apex
b)
apex; base
c)
base; base
d)
base; apex
31.
Peripheral chemoreceptors that can detect changes in blood pH are located in the
a)
medulla oblongata
b)
aortic and carotid bodies
c)
pons
d)
lungs
32.
The primary drive to breath is elicited by which of the following:
a)
reduced PO2
b)
reduced PCO2
c)
increased PO2
d)
increased PCO2
33.
What is the condition of having low blood oxygen levels?
a)
hypocapnia
b)
hypercapnia
c)
hypoxia
d)
hypoxemia
34.
The dorsal respiratory group in the medulla oblongata is involved with
a)
inspiration
b)
expiration
c)
breathing rhythm
d)
both inspiration and expiration
35.
Hyperventilation is stimulated by
a)
increased activity of the apneustic center
b)
decreased contraction of the scalenes
c)
hypercapnia
d)
hypoxemia
36.
Carbon monoxide is lethal because it
a)
reduces CO2 and slows breathing
b)
increases CO2 and causes seizures
c)
binds hemoglobin preventing oxygen binding
d)
increases oxygen unloading at the cells
37.
The affinity of hemoglobin for oxygen is __________ as the partial pressure of oxygen is raised.
a)
increased
b)
decreased
c)
unchanged
38.
The Bohr effect
a)
describes the effect of pH on the affinity of hemoglobin for oxygen
b)
describes the effect of pH on the affinity of hemoglobin for carbon dioxide
c)
describes the mechanism of ventilation
d)
describes the effect of solubility on the amount of gas dissolved in blood
39.
A decrease in temperature will shift the oxygen dissociation curve to the
a)
right
b)
left
c)
will not shift the curve
40.
The majority of carbon dioxide is transported in the blood as
a)
dissolved carbon dioxide in the blood
b)
bicarbonate ion
c)
carbaminohemoglobin
d)
carboxyhemoglobin
41.
Carbon dioxide _____ oxygen unloading and oxygen unloading _______ carbon dioxide transport
a)
increases, improves
b)
increases, worsens
c)
decreases, improves
d)
decreases, worsens
42.
The exchange of chloride ions for bicarbonate through tissue capillaries is called the
a)
chloride shift
b)
Bohr effect
c)
oxygen toxicity
d)
acidosis
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