Which of the following statements regarding calcium homeostasis is not true?
A. Extracellular calcium concentration is monitored in the parathyroid.
B. Inhibition of osteoclast activity helps restore high extracellular calcium concentration to normal levels.
C. Calcitonin and parathyroid hormone have opposing effects on extracellular calcium concentration.
D. 1,25-dihydrocycholecalciferol and parathyroid hormone have opposing effects on extracellular calcium concentration.
Answer:D
Which of the following statements regarding calcium homeostasis is not true?
A. Extracellular calcium concentration is monitored in the parathyroid. B. Inhibition of osteoclast activity helps restore high extracellular calcium concentration to normal levels. C. Calcitonin and parathyroid hormone have opposing effects on extracellular calcium concentration. D. 1,25-dihydrocycholecalciferol and parathyroid hormone have opposing effects on extracellular calcium concentration.