Where are parathyroid glands located? What are their functions? #…

Question

Where are parathyroid glands located? What are their functions?$\#\#\#$ Write a short note on the functions of Parathyroid hormone $(PTH).$

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Answer

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

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Column I [Organ/cells]	Column II [Hormones]
(1) Corpus luteum	(a) hCG
(2) Interstitial cells / Leydig's cells	(b) Estrogen
(3) Placenta	(c) Progesterone
(4) Graafian follicle	(d) Testosterone

Column A	Column B
(1) Frederick Griffith	(a) Test tube assay
(2) Avery, McCarty and MacLeod	(b) Streptococcus pneumoniae
(3) Alfred Hershey and Martha Chase	(c) E. coli
(4) Meselson and Stahl	(d) Bacteriophages