Parathyroid hormone (PTH) acts on the bone and kidney to produce three major effects: ______ in serum calcium concentrations, ______ in serum phosphorus concentrations, and ______ in the active hormonal form of vitamin D (calcitriol).

Question

Quizplus · Accepted Answer

PTH acts on two major target organs, bone and kidney, to produce three major effects: (1) increase in serum calcium concentrations by (2) stimulating release of calcium from bone and by (3) stimulating kidney reabsorption of calcium.Even though phosphorus release from bone is also stimulated by PTH, serum phosphorus concentrations are found decreased because PTH also stimulates an increased phosphorus excretion.Additionally, PTH promotes an increase in the active hormonal form of vitamin D (calcitriol).

Parathyroid Hormone (PTH) Acts on the Bone and Kidney to Produce