Respiratory System 6, Alveoli and respiratory membranes
March 22, 2019
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22:50Now PlayingRespiratory System 6, Alveoli and respiratory membranes
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as posted by the channelAlveoli and the respiratory membranes, MCQs
Which of the following is not part of the conducting system of the respiratory system?
a. Alveoli.
b. Terminal Bronchioles
c. Nose
d. Pharynx
Cells lining the alveoli are;
a. thrombocytes
b. lymphocytes
c. pneumocytes.
d. hepatocytes
Gaseous exchange occurs in the
a. Trachea
b. Terminal bronchioles
d. Alveoli.
e. Bronchi
Which of the following correctly describes the passage of oxygen from the
alveoli into the blood?
a. Oxygen is transported across the respiratory membranes by active transport
mechanisms.
b. Oxygen diffuses up a diffusional gradient to enter the blood.
c. Oxygen diffuses from areas of low concentrations in the alveoli to areas of higher
concentration in the blood.
d. Oxygen diffuses from areas of high concentrations in the alveoli to areas of lower
concentration in the blood.
Surfactant is produced by
a. Red blood cells
b. Ciliated endothelial cells
c. Type I alveolar cells
d. Type II alveolar cells.
Atelectasis is reduced in the smaller airways as a result of;
a. increased pressure in the pulmonary veins
b. increased pressure in the pulmonary artery during right ventricular systole
c. surfactant increasing surface tension
d. surfactant decreasing surface tension.
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