The typical cell making up the alveolar wall is the
A. alveolar type II cell.
B. septal cell.
C. alveolar type I cell.
D. dust cells.
E. alveolar macrophages.
Answer: C
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Antibodies that act against a particular foreign substance are released by ________
A) lymph nodes B) plasma cells C) T lymphocytes D) medullary cords
Much of the filtration, warming, and humidification of the air that enters the respiratory system occurs in the
A) lungs. B) trachea. C) nasal passages. D) bronchi. E) tertiary bronchi.
Which artery is vulnerable to injury because it runs superficially?
A. The subclavian artery B. The popliteal artery C. The femoral artery D. The brachial artery E. The radial artery
Which occurs during isovolumetric ventricular contraction?
A. Rapid filling of the ventricles occurs. B. No blood enters or leaves the ventricles. C. The maximum volume of blood is ejected. D. Ventricular pressure reaches its maximum value of the cardiac cycle. E. The pressure in the ventricles decreases while the pressure in the atria increases.