One characteristic that centenarians share is
A. never having smoked.
B. following the Mediterranean diet.
C. long-lived relatives.
D. a high level of exercise throughout life.
Answer: A
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Identify the highlighted structure
Sympathetic stimulation causes
A. granular cells to release renin, which ultimately leads to mesangial cell relaxation. B. mesangial cells to release angiotensin, which ultimately leads to granular cell contraction. C. granular cells to release renin, which ultimately leads to mesangial cell contraction. D. mesangial cells to release angiotensin, which ultimately leads to granular cell relaxation. E. inhibited release of erythropoietin and contraction of granular and mesangial cells.
Which of the following is not true of the respiratory irritant receptors?
A. Stimulation of these receptors can lead to coughing or sneezing. B. Sensory impulses from the irritant receptors are transported by the vagus nerve. C. Sensory impulses from the irritant receptors are transported to the dorsal respiratory group. D. Stimulation of the respiratory irritant receptors results in dilations in the bronchial tree. E. All of these are true of the respiratory irritant receptors.
The stomach is able to expand nearly 100 times its empty volume partly due to _________ in its walls.
A. microvilli B. rugae C. plicae circulares D. haustra