Females' ovaries secrete estrogen, testosterone, and progesterone. Estrogen has many functions, including development of female secondary sex characteristics. Such charactersistics include, but are not limited to: development of breast tissue, redistribution of body fat to the hips, thighs, buttocks, and breasts, and initiation of menses. In females, testosterone functions primarily to increase sexual arousal. Progesterone, luteinizing hormone, and follicle-stimulating hormone play roles in the menstrual cycle. The corpus luteum is formed from the follicle and remains in the ovary after the egg has been released. It secretes progesterone for about two weeks, then deteriorates in the absence of a pregnancy.

The ovaries contain 1-2 million eggs at birth. This number slowly declines throughout the female's life. The quality of eggs remaining after age 35 is low, whereby years of spontaneous mutation have occurred.

The ovaries contain 1-2 million eggs at birth. This number slowly declines throughout the female's life. The quality of eggs remaining after age 35 is low, whereby years of spontaneous mutation have occurred.

Females' ovaries secrete estrogen, testosterone, and progesterone. Estrogen has many functions, including development of female secondary sex characteristics. Such charactersistics include, but are not limited to: development of breast tissue, redistribution of body fat to the hips, thighs, buttocks, and breasts, and initiation of menses. In females, testosterone functions primarily to increase sexual arousal. Progesterone, luteinizing hormone, and follicle-stimulating hormone play roles in the menstrual cycle. The corpus luteum is formed from the follicle and remains in the ovary after the egg has been released. It secretes progesterone for about two weeks, then deteriorates in the absence of a pregnancy.

The male gonads, the testes, are responsible development and maturation of sperm and secretion of testosterone. Ovaries and fallopian tubes can be ruled out because they are found only in females, and thus do not contribute to the development of sperm. The prostate gland does not produce sperm, rather it secretes fluid that nourishes and protects sperm. The bulbourethral gland aids in the process of ejaculation.

The bulbourethral glands aid in the process of ejaculation by lubricating the urethra. The thyroid, thymus and adrenal glands are not parts of the reproductive system. The thyroid gland secretes thyroid hormones which controls the body's metabolism and homeostasis. The thymus gland is responsible for secreting thymosine, which facilitates the maturation of T cells of the immune system. The adrenal glands are responsible for regulation of many body processes including the stress response, fluid and electrolyte balance, sex hormone production, blood glucose levels, and the fight, flight and fight response.

At day 14 of a menstrual cycle, the LH surge begins, which causes the follicle to burst, resulting in ovulation. The LH surge is caused by a rise in estrogen, which causes the pituitary gland to release LH.

The bulbourethral glands aid in the process of ejaculation by lubricating the urethra. The thyroid, thymus and adrenal glands are not parts of the reproductive system. The thyroid gland secretes thyroid hormones which controls the body's metabolism and homeostasis. The thymus gland is responsible for secreting thymosine, which facilitates the maturation of T cells of the immune system. The adrenal glands are responsible for regulation of many body processes including the stress response, fluid and electrolyte balance, sex hormone production, blood glucose levels, and the fight, flight and fight response.

The male gonads, the testes, are responsible development and maturation of sperm and secretion of testosterone. Ovaries and fallopian tubes can be ruled out because they are found only in females, and thus do not contribute to the development of sperm. The prostate gland does not produce sperm, rather it secretes fluid that nourishes and protects sperm. The bulbourethral gland aids in the process of ejaculation.

At day 14 of a menstrual cycle, the LH surge begins, which causes the follicle to burst, resulting in ovulation. The LH surge is caused by a rise in estrogen, which causes the pituitary gland to release LH.