Parathyroid Hormone (PTH)

question 42

Multiple Choice

Parathyroid hormone (PTH)

• A) is secreted in response to above normal Ca²⁺ levels in the plasma
• B) is secreted in response to below normal phosphate levels in the plasma
• C) acts on the liver to promote hydroxylation of vitamin D
• D) acts to raise plasma Ca²⁺ to normal by stimulating Ca²⁺ reabsorption from the kidney tubule
• E) acts to lower plasma Ca²⁺ and phosphate by stimulating absorption from the gut

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