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STD 11 - 19. Chemical coordination and integration — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 19. Chemical coordination and integration1 Mark
MCQ
The blood calcium level is lowered by the deficiency of
  • A
    both calcitonin and parathormone
  • B
    calcitonin
  • ✓
    parathormone
  • D
    thyroxine.
✓

Answer

Correct option: C.
parathormone
c
(c) :Parathormone is secreted by chief cells of the parathyroid that regulates the metabolism of calcium and phosphate. It increases calcium absorption from the intestine and also increases calcium resorption from the nephrons of the kidneys. So its deficiency leads to low blood calcium level.

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