Which hormones counteract each other in regulating calcium homeostasis?
A. atrial natriuretic peptide and aldosterone
B. antidiuretic hormone and parathyroid hormone
C. antidiuretic hormone and aldosterone
D. antidiuretic hormone and vitamin D (1,25 dihydroxyvitamin D)
E. parathyroid hormone and vitamin D (1,25 dihydroxyvitamin D)
Answer: E
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