Question 1

O2 moves from regions of low partial pressure to regions of high partial pressure.

Accepted Answer

A) True 
 B)False

Question 2

Identify the correct statement(s) .

Accepted Answer

A)   The presence of hemoglobin keeps the blood  P02\mathrm { P } _ { 0 _ { 2 } }P02​​  low and favors O2 movement into the blood, despite a very large transfer of O2 until hemoglobin is completely saturated.
B)   Hemoglobin can combine with O2, CO2, H+, and CO.
C)   Hemoglobin unloads more O2 in the presence of increased tissue acidity.
D)   Hemoglobin buffers against changes in pH due to respiratory carbonic acid.
E)   All of these. F) None of the above
G) B) and C)

Question 3

If the alveolar  P02\mathrm { P } _ { 0 _ { 2 } }P02​​  is 100 mm Hg, the blood leaving the pulmonary capillaries in a normal person will have a  P02\mathrm { P } _ { 0 _ { 2 } }P02​​  of

Accepted Answer

A)   40 mm Hg
B)   46 mm Hg
C)   100 mm Hg
D)   760 mm Hg
E)   none of these F) A) and B)
G) A) and C)

Question 4

Which of the following is not a function of the respiratory system?

Accepted Answer

A)   transports O2 to the tissues
B)   contributes to maintenance of normal acid-base balance
C)   provides a route for heat and water elimination
D)   enables speech, singing, and other vocalization
E)   removes, modifies, activates, or inactivates various materials passing through the pulmonary circulationF) None of the above
G) A) and B)

Question 5

The alveoli are encircled by capillaries.

Accepted Answer

A) True 
 B)False

Question 6

The partial pressure of a gas in blood depends on the amount that is physically dissolved and not on the total content of the gas present in the blood.

Accepted Answer

A) True 
 B)False

Question 7

Which condition would result in the lowest alveolar ventilation rate?

Accepted Answer

A)   quiet breathing
B)   a normal respiratory rate and normal tidal volume
C)   a low respiratory rate and high tidal volume
D)   a high respiratory rate and very low tidal volume
E)   a low respiratory rate and very low tidal volumeF) B) and D)
G) None of the above

Question 8

Which statement is incorrect?

Accepted Answer

A)   Alveoli are the site of gas exchange in the lungs.
B)   Interdependence of alveoli refers to air flow between adjacent alveoli through the pores of Kohn.
C)   Alveolar Type II cells secrete pulmonary surfactant.
D)   Alveoli are very thin and are surrounded by a network of capillaries so that air and blood are separated by a very thin barrier.
E)   The alveoli are thin-walled, inflatable, grape-like sacs at the end of the bronchioles.F) C) and E)
G) C) and D)

Question 9

During forceful expirations

Accepted Answer

A)   The accessory expiratory muscles contract.
B)   The internal intercostals contract.
C)   The abdominal muscles contract.
D)   The ribs are brought closer together.
E)   All of these.F) None of the above
G) C) and D)

Question 10

Complete each of the following statments.
The DRG consists mostly of ____________________ neurons.

Accepted Answer

The answer of Complete each of the following statments.
The DRG...

Question 11

Complete each of the following statments.
Contraction of the ____________________ intercostal muscles elevates the ribs.

Accepted Answer

The answer of Complete each of the following statments.
Contraction of...

Question 12

Complete each of the following statments.
The ____________________ effect refers to the reduced affinity of Hb for O2 in the presence of increased CO2 and H+.

Accepted Answer

Question 13

Both the respiratory system and the circulatory system are involved in the process of respiration.

Accepted Answer

A) True 
 B)False

Question 14

During which of the following would the intrapleural pressure be greater than atmospheric pressure?

Accepted Answer

A)   forced inspiration
B)   passive expiration
C)   passive inspiration
D)   pneumothorax
E)   none of theseF) C) and E)
G) C) and D)

Question 15

The combination of Hb and CO2 is known as carbaminohemoglobin.

Accepted Answer

A) True 
 B)False

Question 16

Alveolar $\mathrm { P } _ { 0 _ { 2 } }$ is higher following inspiration than following expiration.

Accepted Answer

A) True 
 B)False

Question 17

The quantity of O2 that will diffuse between the alveolar air and pulmonary blood depends solely on the partial pressure gradients that exist between the alveoli and blood.

Accepted Answer

A) True 
 B)False

Question 18

Complete each of the following statments.
A drop in the oxygen levels in arterial blood ____________________ the central chemoreceptors.

Accepted Answer

The answer of Complete each of the following statments.
A drop...

Question 19

The tidal volume is the sum of the vital capacity, expiratory reserve volume, and inspiratory reserve volume.

Accepted Answer

A) True 
 B)False

Question 20

If the pulmonary ventilation rate is 3200 ml/minute with a tidal volume of 400, the respiratory rate is ____ breaths per minute.

Accepted Answer

A)   6
B)   8
C)   14
D)   16
E)   20F) C) and E)
G) A) and D)

Exam 13: A--The Respiratory System

Alveolar P02\mathrm { P } _ { 0 _ { 2 } }P02​​ is higher following inspiration than following expiration.

Correct AnswerverifiedShow Answer

Complete each of the following statments. The ____________________ effect refers to the reduced affinity of Hb for O2 in the presence of increased CO2 and H+.

Correct AnswerverifiedShow Answer

Which of the following is not a function of the respiratory system?

Correct AnswerverifiedShow Answer

Complete each of the following statments. The DRG consists mostly of ____________________ neurons.

Correct AnswerverifiedShow Answer

The tidal volume is the sum of the vital capacity, expiratory reserve volume, and inspiratory reserve volume.

Correct AnswerverifiedShow Answer

The alveoli are encircled by capillaries.

Correct AnswerverifiedShow Answer

O2 moves from regions of low partial pressure to regions of high partial pressure.

Correct AnswerverifiedShow Answer

If the pulmonary ventilation rate is 3200 ml/minute with a tidal volume of 400, the respiratory rate is ____ breaths per minute.

Correct AnswerverifiedShow Answer

During which of the following would the intrapleural pressure be greater than atmospheric pressure?

Correct AnswerverifiedShow Answer

Identify the correct statement(s) .

Correct AnswerverifiedShow Answer

If the alveolar P02\mathrm { P } _ { 0 _ { 2 } }P02​​ is 100 mm Hg, the blood leaving the pulmonary capillaries in a normal person will have a P02\mathrm { P } _ { 0 _ { 2 } }P02​​ of

Correct AnswerverifiedShow Answer

The partial pressure of a gas in blood depends on the amount that is physically dissolved and not on the total content of the gas present in the blood.

Correct AnswerverifiedShow Answer

Complete each of the following statments. Contraction of the ____________________ intercostal muscles elevates the ribs.

Correct AnswerverifiedShow Answer

The combination of Hb and CO2 is known as carbaminohemoglobin.

Correct AnswerverifiedShow Answer

Which statement is incorrect?

Correct AnswerverifiedShow Answer

Both the respiratory system and the circulatory system are involved in the process of respiration.

Correct AnswerverifiedShow Answer

Complete each of the following statments. A drop in the oxygen levels in arterial blood ____________________ the central chemoreceptors.

Correct AnswerverifiedShow Answer

During forceful expirations

Correct AnswerverifiedShow Answer

The quantity of O2 that will diffuse between the alveolar air and pulmonary blood depends solely on the partial pressure gradients that exist between the alveoli and blood.

Correct AnswerverifiedShow Answer

Which condition would result in the lowest alveolar ventilation rate?

Correct AnswerverifiedShow Answer

Alveolar $\mathrm { P } _ { 0 _ { 2 } }$ is higher following inspiration than following expiration.

Correct Answer
verified

Complete each of the following statments. The ____________________ effect refers to the reduced affinity of Hb for O₂ in the presence of increased CO₂ and H⁺.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

O₂ moves from regions of low partial pressure to regions of high partial pressure.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If the alveolar $\mathrm { P } _ { 0 _ { 2 } }$ is 100 mm Hg, the blood leaving the pulmonary capillaries in a normal person will have a $\mathrm { P } _ { 0 _ { 2 } }$ of

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The combination of Hb and CO₂ is known as carbaminohemoglobin.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The quantity of O₂ that will diffuse between the alveolar air and pulmonary blood depends solely on the partial pressure gradients that exist between the alveoli and blood.

Correct Answer
verified

Correct Answer
verified