Estrogen
Medical term · E
A female sex hormone produced by the ovaries as part of the menstrual cycle. It encourages an egg to mature and prepares the womb for a pregnancy. Levels vary during the menstrual cycle.
Related terms
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Menstrual cycleThe monthly process in which an egg develops and the lining of the womb is prepared for possible pregnancy. If the egg is not fertilized, it is reabsorbed back into the body and…
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OvariesA pair of organs (each about the size of an almond) in a woman’s pelvis. They produce follicles from which eggs develop.
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Bicornuate uterus (womb)A heart-shaped uterus. Usually the uterus would be pear-shaped.
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Womb (also known as Uterus)The organ where a baby develops during pregnancy. Made of muscle, it is hollow, stretchy and about the size and shape of an upside-down pear. It sits between the bladder and the…