A: stimulates the body's metabolic rate
B: regulate sthe amount of calcium in the blood
C: causes the heart to to contract and pump blood
D: increases the excretion of calcium by the kidneys
2007-05-23 16:48:10 · 4 answers · asked by janet v 1 in Science & Mathematics ➔ Biology
B. Parathormone causes the levels of calcium in the blood to be raised. It works antagonistically with calcitonin, secreted from the thyroid. Thus, the answer is B, "regulate the amount of calcium in the blood", and not D, because to increase the excretion of calcium by the kidneys is to lower the levels of calcium in the blood, which is the job of calcitonin.
2007-05-25 09:56:40 · answer #1 · answered by arac101 2 · 0⤊ 0⤋
Regulate the amount of calcium in the blood.
2007-05-23 17:36:19 · answer #2 · answered by AnGeL 4 · 0⤊ 0⤋
PTH acts on the bone and kidneys and intestine to cause more calcium to be absorbed
2007-05-23 18:02:23 · answer #3 · answered by Thomas L 2 · 0⤊ 0⤋
B
2007-05-23 16:51:02 · answer #4 · answered by Doctor J 7 · 0⤊ 0⤋