A decrease in plasma calcium will initiate an increase in the release of which of the following?
A) parathyroid hormone only
B) calcitonin only
C) 1,25-dihydroxy vitamin D3 only
D) both parathyroid hormone and calcitonin
E) both parathyroid hormone and 1,25-dihydroxy vitamin D3
Answer: E) both parathyroid hormone and 1,25-dihydroxy vitamin D3
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Which of the following is not a plexus of the vagus nerve?
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