Estriol

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Estriol

Estriol (pronounced es-try-ol) is a type of estrogen, which is a group of hormones that play an important role in the female reproductive system.

Etymology

The term "estriol" is derived from the Greek word "oistros", meaning "gadfly" or "frenzy", and the suffix "-ol", which is commonly used in the names of hormones.

Definition

Estriol is one of the three main estrogens produced by the human body, the others being estradiol and estrone. It is produced in significant amounts only during pregnancy, where it is made by the placenta. Estriol levels can be measured to give an indication of the general health of the pregnancy.

Function

Estriol helps to promote the growth and development of the female reproductive system and secondary sexual characteristics. It also helps to regulate the menstrual cycle and plays a role in maintaining pregnancy.

Related Terms

  • Estrogen: The group of sex hormones that promote the development and maintenance of female characteristics in the human body.
  • Estradiol: The most potent form of estrogen, it is primarily responsible for the development of female secondary sexual characteristics.
  • Estrone: A type of estrogen that is produced by the ovaries and is the dominant form of estrogen in women who have gone through menopause.
  • Placenta: An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing baby and removing waste products from the baby's blood.

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