Question 1

If an individual had a fractured larynx:

Accepted Answer

A)   they would not be able to breathe.
B)   the lungs would not properly inflate.
C)   their nose would be crocked.
D)   the esophagus would be blocked.
E)   they would be unable to speak.F) C) and E)
G) D) and E)

Question 2

During inhalation, air moves from the pharynx directly into the trachea.
____________________

Accepted Answer

A) True 
 B)False

Question 3

The pleural cavity is located:

Accepted Answer

A)   between the pleural membranes.
B)   inside the innermost pleural membrane.
C)   outside the outermost pleural membrane.
D)   between the right lung and the left lung.
E)   within the bronchioles.F) B) and C)
G) D) and E)

Question 4

Dalton's Law states that:

Accepted Answer

A)   the amount of a gas that diffuses across a membrane depends on the differences in the gas' partial pressure.
B)   the ability of hemoglobin to bind oxygen depends on the partial pressure of oxygen.
C)   in a mixture of gases, the total pressure of the mixture is the sum of the pressures of the individual gases.
D)   pH causes a displacement of the oxygen-hemoglobin dissociation curve.
E)   as the concentration of chloride ions increases, the ability of hemoglobin to bind carbon dioxide decreases.F) B) and E)
G) D) and E)

Question 5

MATCHING
Match the part of the human respiratory system with its decription.
a.alveoli
e.nasal cavity
b.bronchiole
f.pharynx
c.bronchus
g.trachea
d.larynx
-After leaving the pharynx, inhaled air passes next into this structure.

Accepted Answer

The answer of MATCHING
Match the part of the human respiratory...

Question 6

Figure 46-4
Use the figure to answer the corresponding question(s) .  Oxygen-hemoglobin dissociation curves at three different pH levels
-The phenomenon illustrated in Figure 46-4 is known as:

Accepted Answer

A)   carbon dioxide unloading.
B)   the Bohr effect.
C)   hemoglobin transportation.
D)   chloride shift.
E)   residual capacity.F) A) and C)
G) C) and E)

Question 7

_____ have the most efficient respiratory system of any living vertebrate.

Accepted Answer

A)   Amphibians
B)   Birds
C)   Mammals
D)   Fish
E)   Nonavian reptilesF) C) and E)
G) C) and D)

Question 8

As part of the diving reflex of seals, the heart rate increases.
____________________

Accepted Answer

A) True 
 B)False

Question 9

Pulmonary surfactant does all of the following except:

Accepted Answer

A)   reducing the cohesive forces of water molecules.
B)   reducing the surface tension of water.
C)   moving water across respiratory surfaces.
D)   preventing the alveoli from collapsing.
E)   reducing the energy required to stretch the lungs.F) A) and E)
G) None of the above

Question 10

Tracheal tubes and spiracles are characteristically found in annelids.
____________________

Accepted Answer

A) True 
 B)False

Question 11

Figure 46-1
Use the figure to answer the corresponding question(s) . 
-Refer to Figure 46-1.The structures receiving air in figure 1 are known as:

Accepted Answer

A)   anterior air sacs.
B)   parabronchi.
C)   spiracles.
D)   alveoli.
E)   tracheae.F) A) and C)
G) All of the above

Question 12

Molecular oxygen attaches to the iron atoms in a hemoglobin molecule.
____________________

Accepted Answer

A) True 
 B)False

Question 13

Describe the harmful effects of cigarette smoking on the respiratory system.

Accepted Answer

Concepts to Consider: causes bronchial c...

Question 14

Dalton's law of partial pressures states that the total pressure of a mixture of gases is equal to the sum of the pressures of the individual gases.
____________________

Accepted Answer

A) True 
 B)False

Question 15

Figure 46-3
Use the figure to answer the corresponding question(s) . 
-Fick's law states that:

Accepted Answer

A)   the amount of gas diffusing across a membrane depends on differences in partial pressure.
B)   the total pressure of a mixture of gases is the sum of the pressures of the individual gases.
C)   the dissociation of oxygen from hemoglobin depends on the pH of the environment.
D)   as oxygen concentration increases, there is an increase in the amount of hemoglobin produced.
E)   the size of an animal varies inversely to the amount of diffusion across its respiratory membranes.F) A) and B)
G) D) and E)

Question 16

MATCHING
Match the part of the human respiratory system with its decription.
a.alveoli
e.nasal cavity
b.bronchiole
f.pharynx
c.bronchus
g.trachea
d.larynx
-During swallowing, the epiglottis closes off the top of this structure.

Accepted Answer

The answer of MATCHING
Match the part of the human respiratory...

Question 17

Decompression sickness is caused by:

Accepted Answer

A)   dissolved gases coming out of solution and forming gas bubbles.
B)   the concentration of hemoglobin dropping markedly.
C)   chloride ions precipitating from solution.
D)   the pH of the blood rising too rapidly.
E)   carbonic anhydrase being inhibited.F) A) and B)
G) A) and D)

Question 18

All of the following are adaptations of diving marine mammals for extended submersion times except:

Accepted Answer

A)   breathing in an extra supply of oxygen before a dive.
B)   high concentrations of myoglobin.
C)   greater blood volume per unit mass, compared to nondiving mammals.
D)   a larger than typical spleen.
E)   the collapse of lungs at fairly shallow depths.F) A) and E)
G) C) and E)

Question 19

Mitochondria use inspired oxygen as an electron acceptor in the process known as:

Accepted Answer

A)   pulmonary ventilation.
B)   cellular respiration.
C)   external respiration.
D)   internal respiration.
E)   anaerobic respiration.F) C) and E)
G) A) and E)

Question 20

At higher altitudes:

Accepted Answer

A)   the concentration of oxygen decreases.
B)   the concentration of carbon dioxide increases.
C)   the partial pressure of oxygen decreases.
D)   the partial pressure of carbon dioxide increases.
E)   there is no change in the concentration or partial pressures of atmospheric gases.F) A) and E)
G) A) and D)

Exam 46: Gas Exchange

Mitochondria use inspired oxygen as an electron acceptor in the process known as:

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Decompression sickness is caused by:

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_____ have the most efficient respiratory system of any living vertebrate.

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As part of the diving reflex of seals, the heart rate increases. ____________________

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Pulmonary surfactant does all of the following except:

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Dalton's law of partial pressures states that the total pressure of a mixture of gases is equal to the sum of the pressures of the individual gases. ____________________

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During inhalation, air moves from the pharynx directly into the trachea. ____________________

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The pleural cavity is located:

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All of the following are adaptations of diving marine mammals for extended submersion times except:

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Figure 46-1 Use the figure to answer the corresponding question(s) . -Refer to Figure 46-1.The structures receiving air in figure 1 are known as:

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If an individual had a fractured larynx:

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Figure 46-3 Use the figure to answer the corresponding question(s) . -Fick's law states that:

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Describe the harmful effects of cigarette smoking on the respiratory system.

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Molecular oxygen attaches to the iron atoms in a hemoglobin molecule. ____________________

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At higher altitudes:

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MATCHING Match the part of the human respiratory system with its decription. a.alveoli e.nasal cavity b.bronchiole f.pharynx c.bronchus g.trachea d.larynx -After leaving the pharynx, inhaled air passes next into this structure.

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Dalton's Law states that:

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Figure 46-4 Use the figure to answer the corresponding question(s) . Oxygen-hemoglobin dissociation curves at three different pH levels -The phenomenon illustrated in Figure 46-4 is known as:

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Tracheal tubes and spiracles are characteristically found in annelids. ____________________

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MATCHING Match the part of the human respiratory system with its decription. a.alveoli e.nasal cavity b.bronchiole f.pharynx c.bronchus g.trachea d.larynx -During swallowing, the epiglottis closes off the top of this structure.

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Concepts to Consider: causes bronchial c...
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