Question 1

Tina is singing a song.At a certain point in the song,she forces a large volume of air out of the glottis and at the same time increases the tension on her vocal cords.The sound that she produces is

Accepted Answer

A)  low pitched and loud.
B)  high pitched and loud.
C)  low pitched and soft.
D)  high pitched and soft.
E)  medium pitched and soft.F) All of the above
G) None of the above

Question 2

The ________ is lined by stratified squamous epithelium.

Accepted Answer

A)  nasopharynx
B)  trachea
C)  oropharynx
D)  larynx
E)  nasal cavityF) A) and D)
G) B) and C)

Question 3

The common passageway shared by the respiratory and digestive systems is the

Accepted Answer

A)  larynx.
B)  glottis.
C)  vestibule.
D)  pharynx.
E)  trachea.F) A) and C)
G) A) and B)

Question 4

The obstructive lung disease in which connective tissues are lost,alveolar surfaces are damaged,and the respiratory surface is reduced is called

Accepted Answer

A)  asthma.
B)  bronchitis.
C)  emphysema.
D)  tuberculosis.
E)  pneumonia.F) B) and E)
G) C) and D)

Question 5

Which of the following changes does not occur at birth when an infant takes his or her first breaths?

Accepted Answer

A)  Blood flow to the lungs decreases.
B)  The resistance in the pulmonary arteries decreases.
C)  Changes in blood flow cause the foramen ovale to close.
D)  Air enters the alveoli.
E)  Gas diffuses across the alveolar-capillary membrane.F) D) and E)
G) A) and C)

Question 6

The larynx contains ________ cartilages.

Accepted Answer

A)  14
B)  6
C)  9
D)  2
E)  5F) C) and E)
G) B) and C)

Question 7

Contraction of the intrinsic laryngeal muscles can

Accepted Answer

A)  move the cricoid cartilage.
B)  close the glottis.
C)  constrict the trachea.
D)  move food from the larynx to the esophagus.
E)  assist in breathing during exercise.F) A) and C)
G) A) and E)

Question 8

The portion of the pharynx that receives both air and food is the

Accepted Answer

A)  nasopharynx.
B)  oropharynx.
C)  esophageal pharynx.
D)  aeropharynx.
E)  internal pharynx.F) A) and D)
G) A) and E)

Question 9

The respiratory defense system is important because it

Accepted Answer

A)  helps filter the air.
B)  helps warm the air.
C)  keeps out debris.
D)  keeps out pathogens.
E)  All of the answers are correct.F) A) and D)
G) A) and B)

Question 10

The adult human trachea is about ________ in diameter and contains ________ tracheal cartilages.

Accepted Answer

A)  1) 0 cm; 15-20
B)  1) 0 cm; 10-15
C)  2) 5 cm; 15-20
D)  2) 5 cm; 40-50
E)  4) 5 cm; 60-80F) A) and B)
G) C) and D)

Question 11

Which of the following organs is not part of the lower respiratory system?

Accepted Answer

A)  pharynx
B)  trachea
C)  larynx
D)  bronchi
E)  alveoliF) A) and E)
G) A) and B)

Question 12

Boyle's law states that the pressure of a gas is

Accepted Answer

A)  inversely proportional to the volume of its container.
B)  always higher in the atmosphere than in the lungs.
C)  directly proportional to temperature.
D)  inversely proportional to temperature.
E)  directly proportional to the volume of its container.F) A) and B)
G) B) and D)

Question 13

Boyle's law of gases states that

Accepted Answer

A)  the pressure and volume of a gas are equal.
B)  as the temperature goes up,the pressure goes up.
C)  the total gas pressure is equal to the sum of the partial pressures.
D)  the concentration of dissolved gas is proportional to its partial pressure.
E)  if the volume goes up,the pressure goes down.F) B) and E)
G) B) and D)

Question 14

The percent of oxygen saturation of hemoglobin when the pH is 7.6 is

Accepted Answer

A)  greater than the percent of oxygen saturation of hemoglobin when the pH is 7.2.
B)  less than the percent of oxygen saturation of hemoglobin when the pH is 7.2.
C)  equal to the percent of oxygen saturation of hemoglobin when the pH is 7.2.
D)  equal to the percent of oxygen saturation of hemoglobin when the pH is 7.4.
E)  None of the answers is correct.F) A) and B)
G) A) and C)

Question 15

At a PO₂ of 70 mm Hg and normal temperature and pH,hemoglobin is ________ percent saturated with oxygen.

Accepted Answer

A)  10
B)  25
C)  50
D)  75
E)  more than 90F) None of the above
G) A) and E)

Question 16

Tuberculosis results from an infection by the bacterium

Accepted Answer

A)  Clostridium difficile.
B)  Staphylococcus aureus.
C)  Mycobacterium tuberculosis.
D)  Vancomycin-resistant streptococcus.
E)  Tuberculin plumonae.F) C) and E)
G) B) and C)

Question 17

The nasal cavity,pharynx,and larynx constitute the ________ portion of the airway.

Accepted Answer

A)  conducting
B)  exchange
C)  respiratory
D)  sinus
E)  primaryF) B) and E)
G) B) and D)

Question 18

What is one atmosphere of pressure?

Accepted Answer

A)  760 mm Hg
B)  1000 mm Hg
C)  105 mm Hg
D)  45 mm Hg
E)  650 mm HgF) C) and D)
G) A) and D)

Question 19

The Hering-Breuer reflex

Accepted Answer

A)  functions to increase ventilation with changes in blood pressure.
B)  alters pulmonary ventilation when the PO₂ changes.
C)  alters pulmonary ventilation when the PCO₂ changes.
D)  protects the lungs from damage due to overinflation.
E)  is an important aspect of normal,quiet breathing.F) B) and C)
G) C) and E)

Question 20

The process by which dissolved gases are exchanged between the blood and interstitial fluids is

Accepted Answer

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

Exam 23: The Respiratory System

Tuberculosis results from an infection by the bacterium

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The percent of oxygen saturation of hemoglobin when the pH is 7.6 is

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The obstructive lung disease in which connective tissues are lost,alveolar surfaces are damaged,and the respiratory surface is reduced is called

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What is one atmosphere of pressure?

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Boyle's law of gases states that

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The nasal cavity,pharynx,and larynx constitute the ________ portion of the airway.

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Which of the following changes does not occur at birth when an infant takes his or her first breaths?

Correct AnswerverifiedShow Answer

Which of the following organs is not part of the lower respiratory system?

Correct AnswerverifiedShow Answer

Boyle's law states that the pressure of a gas is

Correct AnswerverifiedShow Answer

The process by which dissolved gases are exchanged between the blood and interstitial fluids is

Correct AnswerverifiedShow Answer

The Hering-Breuer reflex

Correct AnswerverifiedShow Answer

The respiratory defense system is important because it

Correct AnswerverifiedShow Answer

The common passageway shared by the respiratory and digestive systems is the

Correct AnswerverifiedShow Answer

The ________ is lined by stratified squamous epithelium.

Correct AnswerverifiedShow Answer

Contraction of the intrinsic laryngeal muscles can

Correct AnswerverifiedShow Answer

The portion of the pharynx that receives both air and food is the

Correct AnswerverifiedShow Answer

The larynx contains ________ cartilages.

Correct AnswerverifiedShow Answer

Tina is singing a song.At a certain point in the song,she forces a large volume of air out of the glottis and at the same time increases the tension on her vocal cords.The sound that she produces is

Correct AnswerverifiedShow Answer

At a PO₂ of 70 mm Hg and normal temperature and pH,hemoglobin is ________ percent saturated with oxygen.

Correct AnswerverifiedShow Answer

The adult human trachea is about ________ in diameter and contains ________ tracheal cartilages.

Correct AnswerverifiedShow Answer

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The adult human trachea is about in diameter and contains tracheal cartilages.

Correct Answer
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