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MODEL PAPER 5 — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYMODEL PAPER 52 Marks
Question
Which hormone helps maintain the bone density in the body?
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Answer

The sole purpose of the parathyroid glands is to control calcium within the blood in a very tight range between 9.0 and 10.1. In doing so, parathyroids also control how much calcium is in the bones, and therefore, how strong and dense the bones are.

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