How does the serous fluid of the pleurae function?
A. It prevents the pleurae from sliding across each other.
B. It acts as a reservoir for material cleaned from the lung.
C. It reduces friction between pleurae but causes them to cling together.
D. It raises the oxygen content in the pleural space making respiration more efficient.
Answer: C
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The T tubule ranges transversely to the surface of the muscle cell membrane
Indicate whether the statement is true or false
Which of the following is NOT an effect of aging with the cardiovascular system?
A. Excessive cardiac output B. Increased varicose veins C. Increased atherosclerosis D. Increased incidence of coronary artery disease
The reticular formation is an area of the brain that
A. is sensory in function. B. is motor in function. C. has sensory and motor components. D. serves higher-order cognitive functions.
The fatty tissue surrounding the kidneys is important because it ________
A) produces vitamin D and other chemicals needed by the kidney B) stabilizes the position of the kidneys by holding them in their normal position C) is necessary as a barrier between the adrenal glands and kidneys D) ensures adequate energy for the adrenal glands to operate efficiently