In the myogenic mechanism of autoregulation, what is the response to an increase in blood pressure in the afferent arteriole?
A. constriction of the glomerulus
B. dilation of the afferent arteriole
C. dilation of the efferent arteriole
D. constriction of the afferent arteriole
D
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The initial stimulus for labor comes from the:
A) maternal uterus. B) maternal ovaries. C) fetus. D) maternal hypothalamus.
As the filtrate passes through the renal tubules, approximately what percentage is reabsorbed and returned to the circulation?
A) 1 B) 38 C) 63 D) 74 E) 99
Which of the following statements concerning secretin is correct?
A. Secretin is the most potent stimulus for pancreatic HCO3- secretion. B. Secretin stimulates gastrin secretion by parietal cells. C. The most potent stimulus for secretin secretion is the presence of fat in the duodenum. D. Secretin is the most potent stimulus for pancreatic digestive enzyme secretion. E. Secretin stimulates secretion by the parietal and chief cells.
The collar that forms around the opposing ends of bone fragments is called a(n)
A. osteon. B. epiphysis. C. hematoma. D. internal callus. E. external callus.