Reproductive+System

Male reproductive hormone: testoterone made in the testes which are in the scrotum. Testes cells have testosterone receptors. Male starts making testosterone during puberty. Male keeps making testosterone until he dies. The signal is to make sperm. That signal is a daily signal.
 * Reproductive System**

Progesterone receptors are found in the womb (uterus) and keeps the lining of the uterus thick.
 * Female Reproductive Hormones**: Estrogen made in the ovaraies. Ovary has estrogen receptors. The signal is to mature an egg. Estrogen is not released until puberty and stops at menopause. 2 weeks out of every menstrual cycle estrogen is released by the ovary. Progesterone is made in the ovary by the empty egg sac. Progesterone is made from puberty until menopause. Progesterone is released the last two weeks of the menstrual cycle.


 * Male Reproductive Organs**: Sperm Pathway: Testes (sperm are made)--> Epididymis (sperm training school)--> Vas deferens--> Urethra


 * Female Reproductive Organs:** Sperm Pathway: Vagina--> Cervix--> Uterus--> Fallopian tubes (oviducts)

Menstrual Cycle- 28 days- but length can vary Day 1- 5- menstruation occurs Days 6-13- increased production of estrogen by a new ovarian follicle causes endometrium (lining) to thicken- the proliferative phase Days 14- ovulation usually occurs Days 15-28- increased production of progesterone by the corpus luteum causes the endomertrium of the uterus to double or triple in thickness from 1mm-2-3mm a thick secretion is produced, secretory phase, the endometirum is prepared to receive the developing embryo, if pregnancy does not occur, the low level of sex hormones leads to the endometrium breaking down again during mensturation

Menstrual Cycle- Hormones FSH- made in the brain: pituitary gland - level is constant until right before ovulation, goes up before ovulation--> days 1-13 it is secreted and endometrium (lining of the uterus) breaks down Estrogen- made in the ovary, alternating ovaries - slow increase entire first half of cycle, drops before ovulation then gradually goes back up--> days 6-13 it is prominent and the endometrium rebuilds - causes secondary sex characteristics in females-body hair and fat distribution - required for breast development LH- made in the brain: pituitary gland - peaks right before ovulation, peak occurs right after FSH peak--> continues through days 15-28 Ovulation- release egg from ovary Progesterone- made in the ovary - stays constant but shoots up                       after ovulation--> its the prominent hormone furing ovulation- endometrium thickens - required for breast development