Which of the following statements concerning the lungs and the pleura is true?
A. The space between the visceral and parietal pleurae is called the mediastinum.
B. The pleural membranes adhere, but cannot slide past each other.
C. The pleural fluid assists in gas exchange.
D. Each lung is suspended in a separate pleural cavity.
E. Parietal pleura covers the surface of each lung.
Answer: D
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A) acids B) alkaloids C) hydrogen ions D) metal ions
In general, parasympathetic preganglionic fibers are ________ and postganglionic fibers are ________
A) long; short B) short; long C) long; long D) short; short
Which of the following describes the action of the digastric muscle?
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