Question 1

Which vertebrates exhibit a "flow through" respiratory system?

Accepted Answer

A)  mammals
B)  birds
C)  amphibians
D)  fishes
E)  birds and fishesF) A) and E)
G) C) and D)

Question 2

What would be the most direct result of an individual having an inability to produce surfactant in their alveoli?

Accepted Answer

A)  The alveoli would physically collapse.
B)  The alveoli would be much more likely to harbor infections.
C)  The alveoli would fill with fluid due to an ion transport defect.
D)  Oxygen exchange with the blood would be impaired due to a thickening of the epithelium.
E)  Carbon dioxide exchange with the blood would be impaired due to an inhibition of carbonic anhydrasE.F) A) and E)
G) A) and D)

Question 3

Most of the carbon dioxide in the blood of humans is transported

Accepted Answer

A)  as dissolved CO2 in plasmA.
B)  as bicarbonate ion in plasma.
C)  attached to hemoglobin in red blood cells.
D)  attached to hemoglobin in plasma.
E)  as carbonic acid.F) A) and C)
G) B) and E)

Question 4

The proportion of the air we breathe accounted for by oxygen is approximately

Accepted Answer

A)  21%.
B)  1%.
C)  5%.
D)  50%.
E)  78%.F) A) and E)
G) C) and E)

Question 5

The opening to the tracheal system (respiratory system) in insects is the

Accepted Answer

A)  spiracle.
B)  trachea.
C)  alveolus.
D)  bronchus.
E)  stomata.F) A) and B)
G) C) and D)

Question 6

Smaller mammals typically have higher ventilation rates than large mammals.

Accepted Answer

A) True 
 B)False

Question 7

What formula correctly represents the behavior of CO2 in the blood?

Accepted Answer

A)  CO2 + H2O « H2CO3 + CO
B)  CO2 + H+ « HCO3+ « H2O + H2CO3
C)  CO2 + HCO3- « H+ + H2O + H2CO3
D)  CO2 + H2O « H2CO3 « HCO3- + H+
E)  CO2 + H2CO3 + O2 « H2O + CO2 + H2CO3F) A) and B)
G) None of the above

Question 8

The exchange surfaces of fish gills are arranged as rows of

Accepted Answer

A)  lamellae.
B)  trachea.
C)  alveoli.
D)  parabronchi.
E)  spiracles.F) B) and D)
G) A) and E)

Question 9

In conditions that include a constant temperature,if a dog increases the volume of her lung and thereby the volume of gas continained within,predict what will happen to the pressure of the gas.

Accepted Answer

A)  The pressure will increase.
B)  The pressure will decrease.
C)  The pressure will not change.D) All of the above
E) A) and C)

Question 10

The volume of air normally breathed in and out of the lungs in a single breath at rest is referred to as the

Accepted Answer

A)  tidal volume.
B)  total volume.
C)  reserve volume.
D)  inspiratory reserve volume.
E)  expiratory reserve volumE.F) A) and B)
G) All of the above

Question 11

Imagine that you have two people using breathing gear under water.Diver 1 is using an old style "rebreather" that removes carbon dioxide before the mixture is "rebreathed" and therefore decreases overall carbon dioxide concentrations in the blood.Diver 2 is using regular SCUBA gear and is breathing air with the normal amount of carbon dioxide that does not lower blood levels of carbon dioxide.Which diver would have a higher blood pH and which would feel more an "urge to breathe"?

Accepted Answer

A)  Diver 1 would have higher blood pH and would feel the "urge to breathe" sooner.
B)  Diver 2 would have higher blood pH and feel the "urge to breathe" sooner.
C)  Diver 1 would have higher blood pH,while Diver 2 would feel the "urge to breathe" sooner.
D)  Diver 2 would have higher blood pH,while Diver 1 would feel the "urge to breathe" sooner.
E)  There would be no difference in blood pH or breathing between the two divers.F) B) and D)
G) B) and E)

Question 12

Imagine that you have been bitten by a poisonous snake with neurotoxic venom.Thankfully,you are rushed to the emergency room of a local hospital,where you receive antivenom.Your condition subsequently returns to normal.Before your release,your physician chastises you for not being more careful.He informs you that you were within minutes of not being able to breathe as the result of the venom's effect on the nervous control of your breathing.As a biology student,you consider this carefully,and hypothesize that your breathing would have stopped because the venom would cause

Accepted Answer

A)  your trachea to collapse.
B)  your lungs to collapse.
C)  your diaphragm to become inactive.
D)  your blood to lose oxygen.E) None of the above
F) All of the above

Question 13

The main phenomenon that increases the efficiency of gas exchange in fish gills is the

Accepted Answer

A)  countercurrent exchange mechanism.
B)  co-current exchange mechanism.
C)  high degree of oxygen saturation of water.
D)  back-and-forth movement of water that maximizes oxygen uptake.
E)  very high blood pressure found in the circulatory system of fishes.F) A) and D)
G) A) and C)

Question 14

What is the correct sequence of structures through which air passes through on the way into the mammalian lung?

Accepted Answer

A)  pharynx  →\rarr→   larynx  →\rarr→   trachea  →\rarr→  bronchi  →\rarr→   bronchioles  →\rarr→  alveoli
B)  larynx  →\rarr→   pharynx  →\rarr→  trachea  →\rarr→  bronchi  →\rarr→  bronchioles  →\rarr→  alveoli
C)  pharynx  →\rarr→   trachea →\rarr→  larynx  →\rarr→  bronchi  →\rarr→  bronchioles  →\rarr→  alveoli
D)  bronchi →\rarr→   bronchioles  →\rarr→   pharynx  →\rarr→  larynx  →\rarr→  trachea  →\rarr→   alveoli
E)  alveoli  →\rarr→   bronchioles →\rarr→  bronchi  →\rarr→   trachea  →\rarr→   larynx  →\rarr→   pharynx F) A) and B)
G) D) and E)

Question 15

During a particular period of physiological crisis,imagine that your carbon dioxide levels increase sharply,and consequently your blood pH decreases.Predict what will happen to the affinity of your hemoglobin for oxygen in this situation.

Accepted Answer

A)  The affinity for oxygen by hemoglobin is constant - it does not change.
B)  The affinity for oxygen by hemoglobin will increase to correct this situation.
C)  The affinity for oxygen by hemoglobin will decrease to correct this situation.D) All of the above
E) B) and C)

Question 16

Mammals fill their lungs using a negative pressure mechanism.

Accepted Answer

A) True 
 B)False

Exam 37: Respiratory Systems

The volume of air normally breathed in and out of the lungs in a single breath at rest is referred to as the

Correct Answer
verified

What formula correctly represents the behavior of CO₂ in the blood?

Correct Answer
verified

The main phenomenon that increases the efficiency of gas exchange in fish gills is the

Correct Answer
verified

Mammals fill their lungs using a negative pressure mechanism.

Correct Answer
verified

The proportion of the air we breathe accounted for by oxygen is approximately

Correct Answer
verified

Correct Answer
verified

Smaller mammals typically have higher ventilation rates than large mammals.

Correct Answer
verified

Correct Answer
verified

Which vertebrates exhibit a "flow through" respiratory system?

Correct Answer
verified

What is the correct sequence of structures through which air passes through on the way into the mammalian lung?

Correct Answer
verified

Most of the carbon dioxide in the blood of humans is transported

Correct Answer
verified

In conditions that include a constant temperature,if a dog increases the volume of her lung and thereby the volume of gas continained within,predict what will happen to the pressure of the gas.

Correct Answer
verified

What would be the most direct result of an individual having an inability to produce surfactant in their alveoli?

Correct Answer
verified

The opening to the tracheal system (respiratory system) in insects is the

Correct Answer
verified

The exchange surfaces of fish gills are arranged as rows of

Correct Answer
verified

During a particular period of physiological crisis,imagine that your carbon dioxide levels increase sharply,and consequently your blood pH decreases.Predict what will happen to the affinity of your hemoglobin for oxygen in this situation.

Correct Answer
verified

Exam 37: Respiratory Systems

The volume of air normally breathed in and out of the lungs in a single breath at rest is referred to as the

Correct AnswerverifiedShow Answer

What formula correctly represents the behavior of CO2 in the blood?

Correct AnswerverifiedShow Answer

The main phenomenon that increases the efficiency of gas exchange in fish gills is the

Correct AnswerverifiedShow Answer

Mammals fill their lungs using a negative pressure mechanism.

Correct AnswerverifiedShow Answer

The proportion of the air we breathe accounted for by oxygen is approximately

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Smaller mammals typically have higher ventilation rates than large mammals.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which vertebrates exhibit a "flow through" respiratory system?

Correct AnswerverifiedShow Answer

What is the correct sequence of structures through which air passes through on the way into the mammalian lung?

Correct AnswerverifiedShow Answer

Most of the carbon dioxide in the blood of humans is transported

Correct AnswerverifiedShow Answer

In conditions that include a constant temperature,if a dog increases the volume of her lung and thereby the volume of gas continained within,predict what will happen to the pressure of the gas.

Correct AnswerverifiedShow Answer

What would be the most direct result of an individual having an inability to produce surfactant in their alveoli?

Correct AnswerverifiedShow Answer

The opening to the tracheal system (respiratory system) in insects is the

Correct AnswerverifiedShow Answer

The exchange surfaces of fish gills are arranged as rows of

Correct AnswerverifiedShow Answer

During a particular period of physiological crisis,imagine that your carbon dioxide levels increase sharply,and consequently your blood pH decreases.Predict what will happen to the affinity of your hemoglobin for oxygen in this situation.

Correct AnswerverifiedShow Answer

Correct Answer
verified

What formula correctly represents the behavior of CO₂ in the blood?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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verified

Correct Answer
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