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MALES: Gonadotropin-Releasing Hormone (GnRH)

- Produced in the hypothalamus.



- Activates the anterior pituitary gland to secrete and release follicle stimulating hormone and luteinizing hormone.

MALES: Follicle Stimulating Hormone (FSH)

- Produced in the Anterior Pituitary Gland



- Acts directly on the reproductive cells in the testicles causing them to divide and produce sperm

MALES: Luteinizing Hormone (LH)

- Produced in the Anterior Pituitary Gland.



- Promotes the production of testosterone in testes.

MALES: Testosterone

- Produced in the testes.



- Testosterone stimulates sperm development and formation of sex characteristics (facial/body hair, growth of larynx, broadening of shoulders, enhancement of sex drive, etc.)

FEMALES: Gonadotropin-Releasing Hormone (GnRH)

- Produced in the hypothalamus.



- Activates the anterior pituitary gland to secrete and release follicle stimulating hormone and luteinizing hormone.

FEMALES: Follicle Stimulating Hormone (FSH)

- Produced in the Anterior Pituitary Gland.



- Triggers the development of follicle cells in the ovary.



- Regulates the production of estrogen and progesterone.

FEMALES: Luteinizing Hormone (LH)

- Produced in the Anterior Pituitary Gland.



- Causes ovulation and the formation of the corpus luteum.

FEMALES: Estrogen

- Produced in the ovaries.



- Encourages the endometrium tissue to thicken.



- Estrogen initiates the formation of female sex characteristics (breast development, pubic hair, widening of the hips, enhancement of sex drive, etc.).

FEMALES: Progesterone

- Produced by the corpus luteum in the ovary.



- Inhibits further ovulation.



- Prevents uterine contractions.

Menstrual Cycle: Flow Phase

Shedding of the endometrium (menstruation).

Menstrual Cycle: Follicular Phase

The follicles within the ovary develop and begin to secrete the hormone estrogen.

Menstrual Cycle: Ovulation

The egg leaves the ovary and travels through the oviduct to the uterus.

Menstrual Cycle: Luteal Phase

- The development of the corpus luteum.



- Estrogen and progesterone produced.



- Progesterone prevents further ovulation.