Question 1

Use the following two choices.
-decrease in body temperature

Accepted Answer

A) oxygen-hemoglobin dissociation curve shifts to the right 
B) oxygen-hemoglobin dissociation curve shifts to the left 
A) oxygen-hemoglobin dissociation curve shifts to the right 
B) oxygen-hemoglobin dissociation curve shifts to the left

Question 2

A respiratory disease characterized by decreased chloride ion diffusion out of cells and dehydrated respiratory secretions is

Accepted Answer

A)  bronchitis. 
B)  emphysema. 
C)  cystic fibrosis. 
D)  pulmonary fibrosis. 
E)  lung cancer. 
A)  bronchitis. 
B)  emphysema. 
C)  cystic fibrosis. 
D)  pulmonary fibrosis. 
E)  lung cancer.

Question 3

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 these choices is correct. 
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 these choices is correct.

Question 4

Arrange the following in order from highest to lowest PO2. (1) PO2 of pulmonary veins
(2) PO2 of pulmonary artery
(3) PO2 of alveolar air

Accepted Answer

A)  1, 2, 3 
B)  2, 1, 3 
C)  2, 3, 1 
D)  3, 1, 2 
E)  3, 2, 1 
A)  1, 2, 3 
B)  2, 1, 3 
C)  2, 3, 1 
D)  3, 1, 2 
E)  3, 2, 1

Question 5

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 air 
A)  traps dirt and removes it from the air 
B)  moisturizes the air 
C)  exchanges oxygen and carbon dioxide 
D)  warms the air

Question 6

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

Question 7

The lungs have

Accepted Answer

A)  one blood flow route and one lymphatic supply. 
B)  two blood flow routes and one lymphatic supply. 
C)  one blood flow route and two lymphatic supplies. 
D)  two blood flow routes and two lymphatic supplies. 
E)  three blood flow routes and one lymphatic supply. 
A)  one blood flow route and one lymphatic supply. 
B)  two blood flow routes and one lymphatic supply. 
C)  one blood flow route and two lymphatic supplies. 
D)  two blood flow routes and two lymphatic supplies. 
E)  three blood flow routes and one lymphatic supply.

Question 8

Surfactant facilitates alveolar ventilation by

Accepted Answer

A)  decreasing the surface tension between water molecules on the lining of the alveoli. 
B)  decreasing thoracic compliance. 
C)  attracting water to the alveolar surface. 
D)  increasing the surface area for gas exchange. 
E)  increases the surface tension between fluid and the alveoli. 
A)  decreasing the surface tension between water molecules on the lining of the alveoli. 
B)  decreasing thoracic compliance. 
C)  attracting water to the alveolar surface. 
D)  increasing the surface area for gas exchange. 
E)  increases the surface tension between fluid and the alveoli.

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

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. 
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.

Question 11

After hyperventilating for several minutes, a person may develop short periods of apnea because

Accepted Answer

A)  blood pH would drop and inhibit inspiration. 
B)  oxygen in the lungs has not had time to diffuse into the blood. 
C)  the level of oxygen has increased and inhibits the inspiratory center. 
D)  the level of CO2 decreases below the level necessary to stimulate the inspiratory center. 
E)  blood pH will rise and stimulate expiration. 
A)  blood pH would drop and inhibit inspiration. 
B)  oxygen in the lungs has not had time to diffuse into the blood. 
C)  the level of oxygen has increased and inhibits the inspiratory center. 
D)  the level of CO2 decreases below the level necessary to stimulate the inspiratory center. 
E)  blood pH will rise and stimulate expiration.

Question 12

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 13

Internal respiration refers to

Accepted Answer

A)  atmospheric air coming into the lungs. 
B)  gas exchange between the lungs and the blood. 
C)  gas exchange in the atmosphere. 
D)  gas exchange between the blood and body tissues. 
E)  cellular respiration. 
A)  atmospheric air coming into the lungs. 
B)  gas exchange between the lungs and the blood. 
C)  gas exchange in the atmosphere. 
D)  gas exchange between the blood and body tissues. 
E)  cellular respiration.

Question 14

Normally, the partial pressure of oxygen gas is higher in the

Accepted Answer

A)  blood of the pulmonary capillaries. 
B)  bronchioles. 
C)  alveoli. 
D)  venous blood. 
A)  blood of the pulmonary capillaries. 
B)  bronchioles. 
C)  alveoli. 
D)  venous blood.

Question 15

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. 
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.

Question 16

Match the disorder of the respiratory system with the best description.
-sudden infant death syndrome (SIDS)

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 sleep 
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 sleep

Question 17

The largest of the laryngeal cartilages is the

Accepted Answer

A)  epiglottis. 
B)  thyroid cartilage. 
C)  cricoid cartilage. 
D)  corniculate cartilage. 
E)  cuneiform cartilage. 
A)  epiglottis. 
B)  thyroid cartilage. 
C)  cricoid cartilage. 
D)  corniculate cartilage. 
E)  cuneiform cartilage.

Question 18

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

Question 19

Hemoglobin that has oxygen attached is called

Accepted Answer

A)  hemoglobin-oxygen complex. 
B)  carbaminohemoglobin. 
C)  oxyhemoglobin. 
D)  deoxyhemoglobin. 
E)  globoxygen. 
A)  hemoglobin-oxygen complex. 
B)  carbaminohemoglobin. 
C)  oxyhemoglobin. 
D)  deoxyhemoglobin. 
E)  globoxygen.

Question 20

-The diagram illustrates the major regulatory mechanisms of ventilation. What mechanism does "C" represent?

Accepted Answer

A)  Hering-Breuer reflex 
B)  receptors for touch, temperature, pain stimuli 
C)  medullary chemoreceptors 
D)  carotid and aortic body chemoreceptors 
E)  proprioceptors 
A)  Hering-Breuer reflex 
B)  receptors for touch, temperature, pain stimuli 
C)  medullary chemoreceptors 
D)  carotid and aortic body chemoreceptors 
E)  proprioceptors

Exam 23: Respiratory System

Use the following two choices. -decrease in body temperature

A respiratory disease characterized by decreased chloride ion diffusion out of cells and dehydrated respiratory secretions is

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

Arrange the following in order from highest to lowest PO2. (1) PO2 of pulmonary veins (2) PO2 of pulmonary artery (3) PO2 of alveolar air

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

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

The lungs have

Surfactant facilitates alveolar ventilation by

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

A protective function of the respiratory system would be

After hyperventilating for several minutes, a person may develop short periods of apnea because

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

Internal respiration refers to

Normally, the partial pressure of oxygen gas is higher in the

Ventilation refers to the

Match the disorder of the respiratory system with the best description. -sudden infant death syndrome (SIDS)

The largest of the laryngeal cartilages is the

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

Hemoglobin that has oxygen attached is called

-The diagram illustrates the major regulatory mechanisms of ventilation. What mechanism does "C" represent?

The Human Organism

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Muscular System: Histology and Physiology

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Water, Electrolytes, and Acidbase Balance

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Filters

Arrange the following in order from highest to lowest PO₂. (1) PO₂ of pulmonary veins (2) PO₂ of pulmonary artery (3) PO₂ of alveolar air