Question 1

Ordinary air is about 21% oxygen and 0.04% carbon dioxide.

Accepted Answer

A) True 
 B)False

Question 2

The partial pressure of oxygen that stimulates the respiratory areas is ___ of normal.

Accepted Answer

A)   33%
B)   50%
C)   67%
D)   80%E) A) and B)
F) None of the above

Question 3

Max works out about an hour every day, using aerobic machines at a gym. During his moderate physical exercise, blood concentrations of

Accepted Answer

A)   oxygen and carbon dioxide increase.
B)   oxygen and carbon dioxide remain nearly unchanged.
C)   oxygen decrease and carbon dioxide increase.
D)   oxygen increase and carbon dioxide decrease.E) B) and D)
F) A) and B)

Question 4

Of the respiratory air volumes listed, which one has the largest volume?

Accepted Answer

A)   Expiratory reserve volume
B)   Inspiratory reserve volume
C)   Vital capacity
D)   Tidal volumeE) A) and B)
F) A) and C)

Question 5

Breathing rate increases during exercise due to

Accepted Answer

A)   signals from the cerebral cortex to the respiratory areas when it also signals skeletal muscles to contract.
B)   stimulation of the respiratory areas by decreasing blood concentration of oxygen and increasing blood concentration of carbon dioxide.
C)   a joint reflex.
D)   all of the above.E) B) and C)
F) B) and D)

Question 6

The layer of serous membrane that is firmly attached to the surface of a lung is called ______ ______.

Accepted Answer

The answer of The layer of serous membrane that is...

Question 7

Breathing functions to

Accepted Answer

A)   deliver oxygen to cells, where it takes part in the reactions of cellular respiration that liberate energy from nutrient molecules and get rid of carbon dioxide, which maintains the pH of the internal environment.
B)   inflate the lungs, which forces oxygen molecules into the bloodstream.
C)   deliver carbon dioxide to cells, where it takes part in the reactions of cellular respiration that liberate energy from nutrient molecules and get rid of oxygen, which maintains the pH of the internal environment.
D)   deliver oxygen to cells, where it takes part in the reactions of cellular respiration that liberate energy from waste molecules.E) A) and B)
F) A) and C)

Question 8

The organs of the upper respiratory tract are located outside the thorax.

Accepted Answer

A) True 
 B)False

Question 9

Carbon monoxide is toxic because it destroys respiratory areas in the brain.

Accepted Answer

A) True 
 B)False

Question 10

Emphysema results in

Accepted Answer

A)   a decrease in the total surface area of the respiratory membrane.
B)   loss of alveolar wall elasticity.
C)   diminishment in the number of respiratory capillaries.
D)   all of the above.E) C) and D)
F) None of the above

Question 11

The vocal cords are in the

Accepted Answer

A)   pharynx.
B)   larynx.
C)   trachea.
D)   oral cavity.E) A) and B)
F) B) and C)

Question 12

The walls of the alveoli are composed of

Accepted Answer

A)   ciliated columnar epithelium.
B)   simple squamous epithelium.
C)   stratified squamous epithelium.
D)   areolar connective tissue.E) C) and D)
F) A) and B)

Question 13

Air entering the potential space of the pleural cavity is called

Accepted Answer

A)   pneumonia.
B)   pneumothorax.
C)   pulmonary ventilation.
D)   internal respiration.E) A) and B)
F) C) and D)

Question 14

The pharynx functions as a ______, whereas the larynx functions as a ______.

Accepted Answer

A)   common passage for air and food; passageway for food only
B)   passageway for air only; passageway for air and food
C)   common passageway for air and food; passageway for air only
D)   passageway for food only, passageway for air and foodE) B) and D)
F) B) and C)

Question 15

The greatest amount of carbon dioxide transported in the blood is in the form of dissolved carbon dioxide.

Accepted Answer

A) True 
 B)False

Question 16

In tuberculosis

Accepted Answer

A)   an obstruction blocks airflow to alveoli, which collapse, deflating part or all of a lung.
B)   a viral infection increases fluid in the lung.
C)   alveoli collapse after near-drowning.
D)   fibrous connective tissue forms around the sites of bacterial infection.E) A) and B)
F) None of the above

Question 17

The trachea

Accepted Answer

A)   is lined with a ciliated mucous membrane.
B)   includes 20 C-shaped cartilage rings.
C)   is a passageway for air.
D)   is all of the above.E) B) and D)
F) None of the above

Question 18

During an asthma attack, the patient usually finds it most difficult to

Accepted Answer

A)   exhale.
B)   inhale.
C)   contract the respiratory muscles.
D)   expand the lungs.E) None of the above
F) B) and D)

Question 19

The bronchus and blood vessels enter a lung through the _______.

Accepted Answer

The answer of The bronchus and blood vessels enter a...

Question 20

In October 2001 at the site of the World Trade Center in New York City, fires were still burning from the terrorist attacks that had brought down the buildings. The greatest danger to the respiratory system was

Accepted Answer

A)   the odor.
B)   very small particles of debris.
C)   very large particles of debris.
D)   falling material from damaged buildings.E) A) and B)
F) C) and D)

Exam 19: Respiratory System

Breathing functions to

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In October 2001 at the site of the World Trade Center in New York City, fires were still burning from the terrorist attacks that had brought down the buildings. The greatest danger to the respiratory system was

Correct AnswerverifiedShow Answer

The trachea

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Breathing rate increases during exercise due to

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Emphysema results in

Correct AnswerverifiedShow Answer

In tuberculosis

Correct AnswerverifiedShow Answer

The bronchus and blood vessels enter a lung through the _______.

Correct AnswerverifiedShow Answer

The pharynx functions as a ______, whereas the larynx functions as a ______.

Correct AnswerverifiedShow Answer

Ordinary air is about 21% oxygen and 0.04% carbon dioxide.

Correct AnswerverifiedShow Answer

Of the respiratory air volumes listed, which one has the largest volume?

Correct AnswerverifiedShow Answer

Max works out about an hour every day, using aerobic machines at a gym. During his moderate physical exercise, blood concentrations of

Correct AnswerverifiedShow Answer

Carbon monoxide is toxic because it destroys respiratory areas in the brain.

Correct AnswerverifiedShow Answer

The partial pressure of oxygen that stimulates the respiratory areas is ___ of normal.

Correct AnswerverifiedShow Answer

The organs of the upper respiratory tract are located outside the thorax.

Correct AnswerverifiedShow Answer

The greatest amount of carbon dioxide transported in the blood is in the form of dissolved carbon dioxide.

Correct AnswerverifiedShow Answer

The vocal cords are in the

Correct AnswerverifiedShow Answer

The layer of serous membrane that is firmly attached to the surface of a lung is called ______ ______.

Correct AnswerverifiedShow Answer

During an asthma attack, the patient usually finds it most difficult to

Correct AnswerverifiedShow Answer

Air entering the potential space of the pleural cavity is called

Correct AnswerverifiedShow Answer

The walls of the alveoli are composed of

Correct AnswerverifiedShow Answer

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The pharynx functions as a , whereas the larynx functions as a .

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The layer of serous membrane that is firmly attached to the surface of a lung is called .

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