Kaplan Nursing Entrance Practice Exam

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What is the main sex hormone produced by the ovaries?

Progesterone
Androgen
Testosterone
Estrogen

The correct answer is: Estrogen

The main sex hormone produced by the ovaries is estrogen. Estrogen plays a crucial role in the development and regulation of the female reproductive system and secondary sexual characteristics. It is involved in the menstrual cycle, influencing ovulation and the growth of the uterine lining, and plays a significant part in maintaining pregnancy. While other hormones such as progesterone and androgens are also produced by the ovaries, estrogen is the principal hormone associated with the primary functions of the ovaries in terms of sexual development and reproductive processes. Progesterone, for instance, is mainly produced after ovulation and is essential for maintaining pregnancy, but it is not the dominant hormone produced throughout the menstrual cycle. Androgens and testosterone are more associated with male characteristics, although they are present in females as well in lesser quantities, and they do not primarily define ovarian function in the way estrogen does. Thus, estrogen is recognized as the main sex hormone produced by the ovaries.