PHYS 261 Quiz 4
1) Which is NOT considered to be a primary function of the respiratory system?
A) regulation of water balance
B) protection against pathogens
C) gas exchange
D) regulation of pH balance
E) vocalization
2) The actual sites of gas exchange within the lungs are
A) pleural spaces.
B) bronchioles.
C) terminal sacs.
D) alveolar ducts.
E) alveoli.
3) The lungs are enclosed in membranes.
A) pulmonary
B) pleural
C) pericardial
D) costal
E) thoracic
4) Place the following structures of the respiratory tree in the order in which air passes through them.
1. secondary bronchi
2. bronchioles
3. primary bronchi
4. alveoli
5. terminal bronchioles
A) 4, 1, 2, 3, 5
B) B) 1, 3, 2, 5, 4
C) C) 3, 1, 5, 2, 4
D) D) 1, 3, 5, 2, 4
E) E) 3, 1, 2, 5, 4
5) The upper respiratory tract includes all EXCEPT which of the following?
A) pharynx
B) mouth
C) nasal cavity
D) larynx
E) lungs
6) Type II alveolar cells
A) allow rapid diffusion of gases through their thin membranes.
B) are phagocytic.
C) secrete a chemical known as surfactant.
D) all of the above
7) Type I alveolar cells
A) allow rapid diffusion of gases through their thin membranes.
, B) are phagocytic.
C) secrete a chemical known as surfactant.
D) all of the above
8) Surfactant
A) replaces mucus in the alveoli.
B) phagocytizes small particulate matter.
C) helps prevent the alveoli from collapsing.
D) is not found in healthy lung tissue.
E) protects the surface of the lungs.
Match the lung volume with its description.
A. tidal volume
B. inspiratory reserve volume
C. expiratory reserve volume
D. residual volume
B 9) the additional air inhaled after a normal inspiration
D 10) the minimum amount of air always present in the respiratory system, after blowing out all you can
C 11) the extra amount actively (forcibly) exhaled after a normal exhalation
A 12) the amount of air taken in during a single normal inspiration
Match the lung capacity with its description.
A. total lung capacity
B. inspiratory capacity
C. vital capacity
D. functional residual capacity
D 13) the amount of air remaining in the lungs after a normal breath
A 14) the sum of all the lung volumes
B 15) the amount of air inhaled during an active (forced) inspiration
C 16) the total amount of air that can be exchanged at will
17) Of the factors that influence diffusion of respiratory gases, the most variable and, therefore,
important factor to consider is the
A) concentration gradient.
B) electrical charge.
C) diffusion distance.
D) membrane thickness.
E) membrane surface area.
18) High carbon dioxide concentration in body fluids is called
A) hyperoxia.
B) hypercarbia.
C) hypercapnia.
D) hyperdioxia.
19) The partial pressure of oxygen in arterial blood is approximately mm Hg.
A) 45
1) Which is NOT considered to be a primary function of the respiratory system?
A) regulation of water balance
B) protection against pathogens
C) gas exchange
D) regulation of pH balance
E) vocalization
2) The actual sites of gas exchange within the lungs are
A) pleural spaces.
B) bronchioles.
C) terminal sacs.
D) alveolar ducts.
E) alveoli.
3) The lungs are enclosed in membranes.
A) pulmonary
B) pleural
C) pericardial
D) costal
E) thoracic
4) Place the following structures of the respiratory tree in the order in which air passes through them.
1. secondary bronchi
2. bronchioles
3. primary bronchi
4. alveoli
5. terminal bronchioles
A) 4, 1, 2, 3, 5
B) B) 1, 3, 2, 5, 4
C) C) 3, 1, 5, 2, 4
D) D) 1, 3, 5, 2, 4
E) E) 3, 1, 2, 5, 4
5) The upper respiratory tract includes all EXCEPT which of the following?
A) pharynx
B) mouth
C) nasal cavity
D) larynx
E) lungs
6) Type II alveolar cells
A) allow rapid diffusion of gases through their thin membranes.
B) are phagocytic.
C) secrete a chemical known as surfactant.
D) all of the above
7) Type I alveolar cells
A) allow rapid diffusion of gases through their thin membranes.
, B) are phagocytic.
C) secrete a chemical known as surfactant.
D) all of the above
8) Surfactant
A) replaces mucus in the alveoli.
B) phagocytizes small particulate matter.
C) helps prevent the alveoli from collapsing.
D) is not found in healthy lung tissue.
E) protects the surface of the lungs.
Match the lung volume with its description.
A. tidal volume
B. inspiratory reserve volume
C. expiratory reserve volume
D. residual volume
B 9) the additional air inhaled after a normal inspiration
D 10) the minimum amount of air always present in the respiratory system, after blowing out all you can
C 11) the extra amount actively (forcibly) exhaled after a normal exhalation
A 12) the amount of air taken in during a single normal inspiration
Match the lung capacity with its description.
A. total lung capacity
B. inspiratory capacity
C. vital capacity
D. functional residual capacity
D 13) the amount of air remaining in the lungs after a normal breath
A 14) the sum of all the lung volumes
B 15) the amount of air inhaled during an active (forced) inspiration
C 16) the total amount of air that can be exchanged at will
17) Of the factors that influence diffusion of respiratory gases, the most variable and, therefore,
important factor to consider is the
A) concentration gradient.
B) electrical charge.
C) diffusion distance.
D) membrane thickness.
E) membrane surface area.
18) High carbon dioxide concentration in body fluids is called
A) hyperoxia.
B) hypercarbia.
C) hypercapnia.
D) hyperdioxia.
19) The partial pressure of oxygen in arterial blood is approximately mm Hg.
A) 45
