Ans.Parathyroid Glands Location
These are four glands situated on the posterior side of thyroid gland.
Hormone
Parathyroid glands produce a hormone known as parathormone.
Function
Parathormone increases the level of calcium ions in blood.
When there is increased production of parathormone, more than normal calcium salts are absorbed from the bones and added to blood, Consequently the bones become brittle. If there is deficiency in the production of parathormone, blood calcium level falls. It leads to tentany, which affects the functioning of muscles.