Significant role in calcium balance in the body is performed by; I. PTH, II. ${{\rm{T}}_4}$ and ${{\rm{T}}_3}$ , III. TCT. The correct option is

NEET UG BIOLOGY MCQ: CHEMICAL COORDINATION AND INTEGRATION

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Understanding +4 | -1

Significant role in calcium balance in the body is performed by;  I. PTH,  II.

{\mathrm{T}_4}

and

{\mathrm{T}_3}

, III. TCT.  The correct option is

View answer and explanation

Correct option: C

I and III

Option C (I and III) is correct because PTH increases blood calcium levels, and TCT (Calcitonin) decreases blood calcium levels.