How does calcitonin act to lower blood calcium?
A)Increases osteoblast break down of bone matrix,increases calcitriol production,increases intestinal absorption,and decreases renal excretion
B)Increases osteoclast break down of bone matrix,decreases calcitriol production,increases intestinal absorption,and decreases renal excretion
C)Decreases osteoblast break down of bone matrix,increases calcitriol production,increases intestinal absorption,and decreases renal excretion
D)Decreases osteoclast break down of bone matrix,decreases calcitriol production,decreases intestinal absorption,and increases renal excretion
E)Increases endochondral ossification

Question

Quizplus · Accepted Answer

Calcitonin decreases blood calcium levels by decreasing the activity of osteoclasts (cells that break down bone matrix), decreasing calcitriol production (which promotes calcium absorption from the small intestines), decreasing intestinal calcium absorption, and increasing calcium excretion by the kidneys.

How Does Calcitonin Act to Lower Blood Calcium