Question 1

Changes in humans caused by high altitude exposure are ____.

Accepted Answer

A)   always temporary
B)   always permanent
C)   temporary or permanent depending on duration of exposure
D)   temporary or permanent depending on developmental timing of exposure
E)   temporary or permanent depending on duration and developmental timing of exposureF) All of the above
G) A) and B)

Question 2

The concentration of ____ has the greatest influence on the regulation of breathing rate.

Accepted Answer

A)   O2
B)   CO2
C)   H+
D)   N2
E)   COF) B) and D)
G) B) and C)

Question 3

Some deer mice are physiologically adapted to live at high altitudes because ____.

Accepted Answer

A)   adults maintain fetal forms of hemoglobin
B)   of mutations in hemoglobin that increase its oxygen-binding affinity
C)   of mutations in myoglobin that increase its oxygen-binding affinity
D)   of mutations that increase heart rates
E)   of mutations that decrease heart ratesF) A) and B)
G) D) and E)

Question 4

Figure 46.2
-
Answer the question using the accompanying figure. Llamas, which are customarily known as mountain dwellers, have hemoglobin with higher O2binding affinity than that of humans. How would the llama hemoglobin-O2dissociation curve differ from that of a human?

Accepted Answer

The slope of the llama hemoglobin-O₂disso...

Question 5

Which breathing abnormalities can occur in neonatal mammals exposed to nicotine?

Accepted Answer

A)   reduced ventilatory output
B)   increased duration of apneas
C)   SIDS
D)   reduced ventilatory output and increased duration of apneas
E)   reduced ventilatory output, increased duration of apneas, and SIDSF) B) and C)
G) A) and B)

Question 6

Decreases in CO2concentration result in ____.

Accepted Answer

A)   faster breathing
B)   deeper breathing
C)   faster and deeper breathing
D)   slower and more shallow breathing
E)   slower breathingF) A) and B)
G) D) and E)

Question 7

Why is proper ventilation important for a respiring animal?

Accepted Answer

A)   It directly increases gas exchange between the blood and cells.
B)   It maintains proper O2and CO2levels on the external side of the respiratory surface so diffusion across it can be maintained.
C)   It maintains blood circulation within the body of an animal.
D)   It maintains proper O2and CO2levels on the internal side of the respiratory surface so diffusion across it can be maintained.
E)   It directly maintains proper O2and CO2levels in tissues.F) A) and C)
G) A) and D)

Question 8

The process of ____ is the exchange of gases between a respiratory surface and the circulatory system.

Accepted Answer

A)   ventilation
B)   cellular respiration
C)   perfusion
D)   bulk flow
E)   physiological respirationF) B) and D)
G) A) and E)

Question 9

Gas exchange between the air and a cell in an insect tracheal system occurs at the ____.

Accepted Answer

A)   trachea
B)   tracheal branches
C)   gill filaments
D)   tracheoles
E)   spiraclesF) B) and C)
G) A) and E)

Question 10

Studies indicate that in utero nicotine exposure can cause breathing abnormalities in neonatal mammals, including ____.

Accepted Answer

A)   elevated breathing rate while awake
B)   increased frequency of apneas during sleep
C)   delayed arousal from sleep in response to hypoxia
D)   elevated breathing rate while awake and increased frequency of apneas during sleep
E)   increased frequency of apneas during sleep and delayed arousal from sleep in response to hypoxiaF) A) and D)
G) A) and C)

Question 11

CO2and H2O are converted to HCO3- and H+in the blood of the lungs .

Accepted Answer

A) True 
 B)False

Question 12

The circulatory surface provides the interface between the body and the respiratory medium.

Accepted Answer

A) True 
 B)False

Question 13

During resting exhalation in humans, the diaphragm ____ and the internal intercostal muscles ____.

Accepted Answer

A)   contracts; relax
B)   relaxes; contract
C)   contracts; contract
D)   relaxes then contracts; contract then relax
E)   relaxes; relaxF) D) and E)
G) A) and B)

Question 14

What would you predict would happen in an area of the body where blood was relatively acidic (low pH) ?

Accepted Answer

A)   O2would bind more readily to hemoglobin.
B)   CO2would bind more readily to hemoglobin.
C)   O2would release from hemoglobin.
D)   CO2would release from hemoglobin.
E)   Binding of O2by hemoglobin would cease.F) A) and E)
G) A) and D)

Question 15

How is breathing rate regulated in humans before and during physical exercise?

Accepted Answer

Signals from respiratory groups in the m...

Question 16

Match between columns
                        Premises: epiglottis
pharynx
lung
pleura
nasal passages
trachea
alveoli
intercostal muscles
diaphragm
bronchiole

Accepted Answer

The Answer of J and C and G and D is...

Question 17

A ____ uses positive pressure breathing to ventilate its lungs.

Accepted Answer

A)   bird
B)   frog
C)   dog
D)   reptile
E)   humanF) B) and E)
G) C) and E)

Question 18

Among air breathing animals, birds have the most effective mechanism of extracting oxygen from air because ____.

Accepted Answer

A)   birds utilize crosscurrent exchange
B)   bird lungs have more surface area
C)   bird lungs are the largest among vertebrates
D)   the air sacs provide additional respiratory surfaces
E)   birds utilize positive force exchangeF) B) and C)
G) D) and E)

Question 19

Most O2is transported in the blood ____.

Accepted Answer

A)   dissolved in the plasma
B)   as bicarbonate ions
C)   bound to hemoglobin
D)   as carbon dioxide
E)   bound to bicarbonate ionsF) A) and C)
G) D) and E)

Question 20

The ____ are most sensitive to changes in CO2.

Accepted Answer

A)   aortic bodies
B)   carotid bodies
C)   receptors of the medulla
D)   receptors of the aorta
E)   medulla bodiesF) A) and B)
G) All of the above

Exam 46: Gas Exchange: the Respiratory System

Figure 46.2 - Answer the question using the accompanying figure. Llamas, which are customarily known as mountain dwellers, have hemoglobin with higher O₂binding affinity than that of humans. How would the llama hemoglobin-O₂dissociation curve differ from that of a human?

Correct Answer
verified
The slope of the llama hemoglobin-O₂disso...
View Answer

CO₂and H₂O are converted to HCO₃- and H⁺in the blood of the lungs .

Correct Answer
verified

The ____ are most sensitive to changes in CO₂.

Correct Answer
verified

Gas exchange between the air and a cell in an insect tracheal system occurs at the ____.

Correct Answer
verified

Among air breathing animals, birds have the most effective mechanism of extracting oxygen from air because ____.

Correct Answer
verified

Most O₂is transported in the blood ____.

Correct Answer
verified

Decreases in CO₂concentration result in ____.

Correct Answer
verified

The concentration of ____ has the greatest influence on the regulation of breathing rate.

Correct Answer
verified

How is breathing rate regulated in humans before and during physical exercise?

Correct Answer
verified
Signals from respiratory groups in the m...
View Answer

Changes in humans caused by high altitude exposure are ____.

Correct Answer
verified

Which breathing abnormalities can occur in neonatal mammals exposed to nicotine?

Correct Answer
verified

Why is proper ventilation important for a respiring animal?

Correct Answer
verified

The process of ____ is the exchange of gases between a respiratory surface and the circulatory system.

Correct Answer
verified

Some deer mice are physiologically adapted to live at high altitudes because ____.

Correct Answer
verified

What would you predict would happen in an area of the body where blood was relatively acidic (low pH) ?

Correct Answer
verified

Studies indicate that in utero nicotine exposure can cause breathing abnormalities in neonatal mammals, including ____.

Correct Answer
verified

The circulatory surface provides the interface between the body and the respiratory medium.

Correct Answer
verified

A ____ uses positive pressure breathing to ventilate its lungs.

Correct Answer
verified

During resting exhalation in humans, the diaphragm and the internal intercostal muscles .

Correct Answer
verified

Answer the questions using the accompanying figure. Match the appropriate part of the human respiratory system with its correct label. Not all letters will be used. Figure 46.1

Exam 46: Gas Exchange: the Respiratory System

Figure 46.2 - Answer the question using the accompanying figure. Llamas, which are customarily known as mountain dwellers, have hemoglobin with higher O2binding affinity than that of humans. How would the llama hemoglobin-O2dissociation curve differ from that of a human?

Correct AnswerverifiedThe slope of the llama hemoglobin-O2disso...View AnswerShow Answer

CO2and H2O are converted to HCO3- and H+in the blood of the lungs .

Correct AnswerverifiedShow Answer

The ____ are most sensitive to changes in CO2.

Correct AnswerverifiedShow Answer

Gas exchange between the air and a cell in an insect tracheal system occurs at the ____.

Correct AnswerverifiedShow Answer

Among air breathing animals, birds have the most effective mechanism of extracting oxygen from air because ____.

Correct AnswerverifiedShow Answer

Most O2is transported in the blood ____.

Correct AnswerverifiedShow Answer

Decreases in CO2concentration result in ____.

Correct AnswerverifiedShow Answer

The concentration of ____ has the greatest influence on the regulation of breathing rate.

Correct AnswerverifiedShow Answer

How is breathing rate regulated in humans before and during physical exercise?

Correct AnswerverifiedSignals from respiratory groups in the m...View AnswerShow Answer

Changes in humans caused by high altitude exposure are ____.

Correct AnswerverifiedShow Answer

Which breathing abnormalities can occur in neonatal mammals exposed to nicotine?

Correct AnswerverifiedShow Answer

Why is proper ventilation important for a respiring animal?

Correct AnswerverifiedShow Answer

The process of ____ is the exchange of gases between a respiratory surface and the circulatory system.

Correct AnswerverifiedShow Answer

Some deer mice are physiologically adapted to live at high altitudes because ____.

Correct AnswerverifiedShow Answer

What would you predict would happen in an area of the body where blood was relatively acidic (low pH) ?

Correct AnswerverifiedShow Answer

Studies indicate that in utero nicotine exposure can cause breathing abnormalities in neonatal mammals, including ____.

Correct AnswerverifiedShow Answer

The circulatory surface provides the interface between the body and the respiratory medium.

Correct AnswerverifiedShow Answer

A ____ uses positive pressure breathing to ventilate its lungs.

Correct AnswerverifiedShow Answer

During resting exhalation in humans, the diaphragm ____ and the internal intercostal muscles ____.

Correct AnswerverifiedShow Answer

Answer the questions using the accompanying figure. Match the appropriate part of the human respiratory system with its correct label. Not all letters will be used. Figure 46.1

Figure 46.2 - Answer the question using the accompanying figure. Llamas, which are customarily known as mountain dwellers, have hemoglobin with higher O₂binding affinity than that of humans. How would the llama hemoglobin-O₂dissociation curve differ from that of a human?

Correct Answer
verified
The slope of the llama hemoglobin-O₂disso...
View Answer

CO₂and H₂O are converted to HCO₃- and H⁺in the blood of the lungs .

Correct Answer
verified

The ____ are most sensitive to changes in CO₂.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Most O₂is transported in the blood ____.

Correct Answer
verified

Decreases in CO₂concentration result in ____.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Signals from respiratory groups in the m...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

During resting exhalation in humans, the diaphragm and the internal intercostal muscles .

Correct Answer
verified