Question 1

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) C) and D)
F) A) and B)

Question 2

What is the function of the ciliated epithelium of the tracheobronchial tree?

Accepted Answer

A)   To cause coughing
B)   A mucus-cilia escalator
C)   Move dirt toward the alveoli
D)   All of the choices are correct.E) None of the above
F) B) and C)

Question 3

Use the table to determine the best answer. 
-Which of the patients above is suffering from emphysema?

Accepted Answer

The answer of Use the table to determine the best...

Question 4

When people aspirate liquids or food into their lungs, the liquid or food most commonly enters the right lung rather than the left lung. This is because the right primary bronchus is ________ than the left primary bronchus.

Accepted Answer

A)   longer
B)   thinner
C)   more vertical
D)   less ciliated
E)   shorterF) C) and E)
G) All of the above

Question 5

Most O2 is carried in the blood ________; but most CO2 is ________.

Accepted Answer

A)   dissolved in plasma; associated with salt or acid
B)   bound to hemoglobin; associated with bicarbonate ions in the plasma
C)   combined with albumin; associated with carbonic acid
D)   bound to hemoglobin; bound to albumin
E)   bound to plasma proteins; carried as CO2F) A) and C)
G) A) and E)

Question 6

Which of the following are mechanisms to prevent food from entering the larynx? (Check all that apply.)

Accepted Answer

A)   Contraction of the thyroid cartilage, pinching closed the larynx
B)   Movement of the tongue over the inlet to the larynx
C)   Closure of the glottis
D)   Tipping of epiglottis over glottisE) A) and B)
F) A) and C)

Question 7

Ventilation refers to the

Accepted Answer

A)   movement of air into and out of the lungs.
B)   gas exchange between the blood and the tissues.
C)   transportation of oxygen and carbon dioxide in the blood.
D)   gas exchange between the air in the lungs and the blood.
E)   respiration at the cellular level.F) A) and B)
G) A) and C)

Question 8

Oxygen diffusion from the alveolus to the pulmonary capillary occurs because

Accepted Answer

A)   alveolar PO2 is greater than capillary PO2.
B)   oxygen diffuses faster than carbon dioxide.
C)   alveolar PCO2 is greater than capillary PCO2.
D)   alveolar PO2 is less than capillary PCO2.
E)   carbon dioxide diffuses faster than oxygen.F) None of the above
G) A) and E)

Question 9

The posterior wall of the trachea contains smooth muscle called the ________ muscle.

Accepted Answer

The answer of The posterior wall of the trachea contains...

Question 10

If you exercise with enough intensity that the blood pH is changed, you have exceeded the ________.

Accepted Answer

A)   aerobic threshold
B)   acidity point
C)   base point
D)   pH threshold
E)   anaerobic thresholdF) A) and E)
G) B) and E)

Question 11

Indicate the statement that describes respiratory function in a highly trained athlete at maximal exercise.

Accepted Answer

A)   Unchanged minute ventilation; increased respiratory rate; decreased vital capacity
B)   Increased residual volume; increased respiratory rate; decreased alveolar ventilation
C)   Increased tidal volume; unchanged minute ventilation; unchanged alveolar ventilation
D)   Increased minute ventilation; increased alveolar ventilation; unchanged tidal volume
E)   Increased tidal volume; increased minute ventilation; increased alveolar ventilationF) A) and D)
G) A) and E)

Question 12

The largest of the laryngeal cartilages is ________.

Accepted Answer

A)   epiglottis
B)   thyroid cartilage
C)   cricoid cartilage
D)   corniculate cartilage
E)   cuneiform cartilageF) A) and B)
G) A) and C)

Question 13

Gas exchange between the air and the blood takes place in the ________.

Accepted Answer

The answer of Gas exchange between the air and the...

Question 14

The pitch of the sound produced by the vocal folds is controlled by the

Accepted Answer

A)   frequency of the vibrations.
B)   amplitude of the vibrations.
C)   thickness of the thyroid cartilage.
D)   size of the glottis.
E)   force of air moving past them.F) A) and B)
G) B) and E)

Question 15

The serous membranes that surround the lungs are called the ________ membranes.

Accepted Answer

A)   mucous
B)   synovial
C)   pleural
D)   peritoneal
E)   pulmonaryF) B) and D)
G) A) and E)

Question 16

Oxygen and carbon dioxide are exchanged across the respiratory membrane by the process of ________.

Accepted Answer

A)   active transport
B)   diffusion
C)   filtration
D)   osmosis
E)   cotransportF) A) and B)
G) A) and C)

Question 17

Which type of alveolar cells produce surfactant?

Accepted Answer

A)   Ciliated simple cuboidal epithelial cells
B)   Type I pneumocytes
C)   Type II pneumocytes
D)   MacrophagesE) A) and D)
F) None of the above

Question 18

The trachea

Accepted Answer

A)   is located in the pleural cavity.
B)   has "C" shaped cartilages that form its anterior and lateral sides.
C)   is lined with keratinized squamous epithelium.
D)   bifurcates to form the bronchioles.
E)   collapses when not in use.F) All of the above
G) A) and D)

Question 19

Gas exchange between the air in the lungs and the blood takes place in the ________.

Accepted Answer

A)   alveoli
B)   primary bronchi
C)   terminal bronchioles
D)   trachea
E)   respiratory bronchiF) A) and E)
G) C) and D)

Question 20

For air to flow into or out of the lungs, there must be

Accepted Answer

A)   a volume gradient established between the atmosphere and the alveoli.
B)   a temperature gradient between the atmosphere and the alveoli.
C)   a pressure gradient established between the atmosphere and the alveoli.
D)   a diffusion gradient between the atmosphere and the alveoli.
E)   None of the choices are correct.F) All of the above
G) A) and B)

Exam 23: Respiratory System

Oxygen and carbon dioxide are exchanged across the respiratory membrane by the process of ________.

Correct AnswerverifiedShow Answer

For air to flow into or out of the lungs, there must be

Correct AnswerverifiedShow Answer

The posterior wall of the trachea contains smooth muscle called the ________ muscle.

Correct AnswerverifiedShow Answer

Ventilation refers to the

Correct AnswerverifiedShow Answer

The largest of the laryngeal cartilages is ________.

Correct AnswerverifiedShow Answer

Indicate the statement that describes respiratory function in a highly trained athlete at maximal exercise.

Correct AnswerverifiedShow Answer

The trachea

Correct AnswerverifiedShow Answer

The serous membranes that surround the lungs are called the ________ membranes.

Correct AnswerverifiedShow Answer

The pitch of the sound produced by the vocal folds is controlled by the

Correct AnswerverifiedShow Answer

Gas exchange between the air and the blood takes place in the ________.

Correct AnswerverifiedShow Answer

Use the table to determine the best answer. -Which of the patients above is suffering from emphysema?

Correct AnswerverifiedShow Answer

A protective function of the respiratory system would be

Correct AnswerverifiedShow Answer

Most O2 is carried in the blood ________; but most CO2 is ________.

Correct AnswerverifiedShow Answer

When people aspirate liquids or food into their lungs, the liquid or food most commonly enters the right lung rather than the left lung. This is because the right primary bronchus is ________ than the left primary bronchus.

Correct AnswerverifiedShow Answer

Which of the following are mechanisms to prevent food from entering the larynx? (Check all that apply.)

Correct AnswerverifiedShow Answer

Oxygen diffusion from the alveolus to the pulmonary capillary occurs because

Correct AnswerverifiedShow Answer

What is the function of the ciliated epithelium of the tracheobronchial tree?

Correct AnswerverifiedShow Answer

Gas exchange between the air in the lungs and the blood takes place in the ________.

Correct AnswerverifiedShow Answer

Which type of alveolar cells produce surfactant?

Correct AnswerverifiedShow Answer

If you exercise with enough intensity that the blood pH is changed, you have exceeded the ________.

Correct AnswerverifiedShow Answer

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Most O₂ is carried in the blood ; but most CO₂ is .

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