write a short note on estrogen and parathyroid hormone
Answers
Answer:
In Non-pregnant females, they are predominantly secreted by the ovaries. However, during pregnancy, the placenta secretes a lot of estrogens.
The three types of estrogens are; β-estradiol, estrone and estriol.
The most active and the principal estrogen produced by the ovaries is the β-estradiol.
They play an important role in the growth and development of ovarian follicles and breast
They are responsible for the development of secondary sexual characteristics (e.g. high pitch voice)
They inhibit osteoclastic activity and stimulate bone growth. Osteoporosis in menopausal women is because of reduced estrogen levels.
They also influence the texture of the skin and female sexual behaviour.
The principal/chief cells of the parathyroid produce the parathyroid hormone, also called the parathormone. The function of this hormone is
To maintain calcium and phosphate balance in the blood and other tissues.
To increase calcium reabsorption from the intestine as well as from the nephrons of the kidney
To initiate bone resorption (e.g. reabsorption of calcium from bones), in case the blood calcium levels drop.
Answer:
Estrogen is a hormone that plays various roles in the body. In females, it helps develop and maintain both the reproductive system and female characteristics, such as breasts and pubic hair.
Parathyroid hormone (PTH), also called parathormone or parathyrin, is a hormone secreted by the parathyroid glands that regulates the serum calcium concentration through its effects on bone, kidney, and intestine.