Calcium reabsorption by the kidneys is promoted by the hormone
A) calcitonin.
B) parathyroid hormone.
C) aldosterone.
D) cortisol.
E) ADH.
B
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The anorectal flexure of the anal canal:
A) occurs at the level of S3. B) is maintained by the transverse rectal folds. C) is where the alimentary tract penetrates the pelvic diaphragm. D) is within the rectovesical pouch. E) is where the omental appendices cease.
The ____ produces the female steroid sex hormones estrogen and progesterone
a. uterus b. cervix c. ovary d. vagina
Osteomyelitis is
A. bone inflammation that often results from bacterial infection. B. a disease in adults, especially women, characterized by a reduced amount of bone matrix. C. a disease in children characterized by soft, bowed, and swollen bones. D. a disease in adults characterized by softening of bones resulting from calcium depletion. E. a group of genetic disorders producing very brittle bones that are easily fractured; occurs because of insufficient collagen development.
A person warming up after being cold feels a warm rush as blood flows quickly to the peripheral appendages. Nitric oxide is important in this situation because it
A. raises blood temperature. B. raises blood pressure. C. relaxes the smooth muscle in the blood vessel wall. D. enhances gas exchange.