NEET PG DENTAL EXAM

HISTOLOGY

CARTILAGE BONE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these hormones promotes deposition of new bone minerals by osteoblasts?
A
Calcitriol
B
Calcitonin
C
Parathyroid Hormone
D
Vitamin D
Explanation: 

Detailed explanation-1: -PTH acts on the kidney to conserve calcium and to stimulate calcitriol production, which increases intestinal absorption of calcium. PTH also acts on the bone to increase movement of calcium from bone to blood.

Detailed explanation-2: -Calcitonin increases Wnt10b and bone formation but decreases bone resorption in ovariectomized osteoporotic rats.

Detailed explanation-3: -FGF23, produced almost exclusively by the osteocytes, is a phosphaturic hormone that plays a major role in regulation of the bone remodeling process. Remodeling composite components, bone mineralization and resorption cycles create a continuous influx-efflux loop of the inorganic phosphate (Pi) through the skeleton.

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