Question 1

A greater than normal amount of CO2 in the blood is called

Accepted Answer

A)  hypercapnia.
B)  hypoxia.
C)  hyperdioxemia.
D)  hypodioxemia.E) B) and D)
F) A) and D)

Question 2

The diameter of bronchioles can change because their walls contain

Accepted Answer

A)  smooth muscle.
B)  skeletal muscle.
C)  fibrous cartilage.
D)  hyaline cartilage.
E)  elastic cartilage.F) A) and B)
G) A) and C)

Question 3

Which of the following is an effect of aging on the respiratory system?

Accepted Answer

A)  vital capacity is unchanged
B)  minute ventilation rates increase
C)  residual volume increases
D)  gas exchange in the lungs remains unchangedE) A) and C)
F) B) and C)

Question 4

Mr.Huff and Puff exhales normally; then,using forced expiration,he exhales as much air as possible.The volume of air still remaining in his lungs is called

Accepted Answer

A)  expiratory reserve volume.
B)  tidal volume.
C)  inspiratory reserve volume.
D)  vital capacity.
E)  residual volume.F) A) and B)
G) A) and E)

Question 5

Hemoglobin that has oxygen attached is called

Accepted Answer

A)  hemoglobin-oxygen complex.
B)  carbaminohemoglobin.
C)  oxyhemoglobin.
D)  deoxyhemoglobin.
E)  globoxygen.F) All of the above
G) A) and E)

Question 6

As temperature increases,how would this affect the oxyhemoglobin-dissociation curve?

Accepted Answer

A)  shift it to the left
B)  shift it to the right
C)  no change
D)  shift it up
E)  None of these choices is correctF) A) and B)
G) A) and E)

Question 7

If the total pressure of a mixture of gases was 760 mm Hg and its composition is 20% oxygen,0.04% carbon dioxide,75% nitrogen,and 5% water vapor,then the partial pressure of oxygen would be

Accepted Answer

A)  740 mm Hg.
B)  20 mm Hg.
C)  148 mm Hg.
D)  152 mm Hg.
E)  200 mm Hg.F) A) and B)
G) A) and D)

Question 8

The volume of air inspired or expired with each breath is the

Accepted Answer

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

Question 9

When air passes through the glottis,which structures vibrate to produce sound?

Accepted Answer

A)  thyroid folds
B)  ventricular folds
C)  epiglottal cords
D)  cricohyoid folds
E)  vocal folds (cords) F) B) and D)
G) D) and E)

Question 10

Match the disorder of the respiratory system with the best description.
-cystic fibrosis

Accepted Answer

A)  destruction of the alveolar walls
B)  inflammation of the bronchii
C)  inherited disease that affects secretory cells lining the lungs
D)  replacement of lung tissue with fibrous connective tissue
E)  infant stops breathing during sleepF) D) and E)
G) None of the above

Question 11

Match the term with the appropriate description,answer with the letter preceding the description.
-external nares "Enter the letter of the correct description below"

Accepted Answer

A)  the floor of the nasal cavity
B)  superior portion of pharynx
C)  a soft process that extends inferiorly from the posterior edge of the soft palate
D)  the opening of the nasal cavity into the pharynx
E)  external openings of the nasal cavityF) A) and B)
G) A) and C)

Question 12

As the result of an asthmatic attack,

Accepted Answer

A)  ventilation exceeds the ability of blood to pick up oxygen.
B)  ventilation is inadequate to oxygenate blood.
C)  pulmonary blood flow is reduced while ventilation remains normal.
D)  the surface area available for gas exchange increases.
E)  bronchioles dilate.F) A) and C)
G) A) and D)

Question 13

Which of the following is NOT a function of the pseudostratified ciliated columnar epithelium of the nasal cavity?

Accepted Answer

A)  traps dirt and removes it from the air
B)  moisturizes the air
C)  exchanges oxygen and carbon dioxide
D)  warms the airE) B) and C)
F) All of the above

Question 14

During swallowing,the opening into the larynx is covered by the

Accepted Answer

A)  epiglottis.
B)  thyroid cartilage.
C)  cricoid cartilage.
D)  arytenoid cartilage.
E)  the "Adam's apple".F) A) and B)
G) A) and C)

Question 15

Which of the following is part of the upper respiratory tract?

Accepted Answer

A)  lungs
B)  pharynx
C)  trachea
D)  bronchi
E)  bronchiolesF) C) and E)
G) B) and E)

Question 16

Why is transfused blood discarded after about 6 weeks of storage?

Accepted Answer

A)  It can not bind to oxygen anymore.
B)  It becomes too thick.
C)  The BPG levels are too low for adequate release of oxygen to tissues.
D)  The percent oxygen saturation is too low.E) C) and D)
F) B) and C)

Question 17

Blood oxygen levels

Accepted Answer

A)  are more important than carbon dioxide levels in the regulation of respiration.
B)  need to change only slightly to cause a change in respiration rate.
C)  within the normal PO2 range have little effect on regulation of respiration.
D)  in venous blood and arterial blood are about the same.
E)  never change enough to influence respiration.F) B) and C)
G) A) and B)

Question 18

A protective function of the respiratory system would be

Accepted Answer

A)  altering blood pH by changing blood CO2 levels.
B)  olfaction by drawing molecules into the nasal cavity.
C)  producing ACE which helps regulate blood pressure.
D)  preventing microorganisms from entering the body.E) A) and B)
F) A) and C)

Question 19

It is possible to consciously control the rate and depth of respiration.

Accepted Answer

A) True 
 B)False

Question 20

When carbon dioxide levels in the blood increase,the

Accepted Answer

A)  condition is called hypocapnia.
B)  pH of the blood increases.
C)  blood becomes more acidic.
D)  number of hydrogen ions in the blood decreases.
E)  blood becomes more alkaline.F) A) and E)
G) B) and E)

Exam 23: Respiratory System

The diameter of bronchioles can change because their walls contain

Correct AnswerverifiedShow Answer

Match the term with the appropriate description,answer with the letter preceding the description. -external nares "Enter the letter of the correct description below"

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It is possible to consciously control the rate and depth of respiration.

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As temperature increases,how would this affect the oxyhemoglobin-dissociation curve?

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The volume of air inspired or expired with each breath is the

Correct AnswerverifiedShow Answer

Match the disorder of the respiratory system with the best description. -cystic fibrosis

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When air passes through the glottis,which structures vibrate to produce sound?

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Mr.Huff and Puff exhales normally; then,using forced expiration,he exhales as much air as possible.The volume of air still remaining in his lungs is called

Correct AnswerverifiedShow Answer

As the result of an asthmatic attack,

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Which of the following is an effect of aging on the respiratory system?

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A greater than normal amount of CO2 in the blood is called

Correct AnswerverifiedShow Answer

Hemoglobin that has oxygen attached is called

Correct AnswerverifiedShow Answer

If the total pressure of a mixture of gases was 760 mm Hg and its composition is 20% oxygen,0.04% carbon dioxide,75% nitrogen,and 5% water vapor,then the partial pressure of oxygen would be

Correct AnswerverifiedShow Answer

When carbon dioxide levels in the blood increase,the

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Blood oxygen levels

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Which of the following is NOT a function of the pseudostratified ciliated columnar epithelium of the nasal cavity?

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Which of the following is part of the upper respiratory tract?

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Why is transfused blood discarded after about 6 weeks of storage?

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During swallowing,the opening into the larynx is covered by the

Correct AnswerverifiedShow Answer

A protective function of the respiratory system would be

Correct AnswerverifiedShow Answer

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A greater than normal amount of CO₂ in the blood is called

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