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Control and Co-ordination — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYControl and Co-ordination5 Marks
Question
Where are parathyroid glands located? What are their functions? $OR$ Write a short note on the functions of Parathyroid hormone $ \text{(PTH).}$
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Answer

  1. Parathyroid glands are located on the back side of the thyroid gland.
  2. There are two pairs of parathyroid glands. One pair of parathyroid is in each lobe of thyroid.
  3. Parathyroid glands secrete a peptide hormone known as parathromone or parathyroid hormone $ \text{(PTH).}$
  4. The level of $Ca^{++}$ in the blood regulates the secretion of $ \text{(PTH).}$
  5. $\text{(PTH)}$ is hypercalcemic hormone, it increases blood calcium level. Thus the calcium balance is maintained by $\text{(TCT)}$ and $\text{PTH.}$

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