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Freproductive
| Question | Answer |
|---|---|
| What are the general functions of the female reproductive system? | produce oocytes, provide an environment fir embryonic/fetal development |
| What si the general function fo the male reproductive system? | produce sperm |
| What is the female system? | an open system consisting of tubes connected to the outside enviornment |
| What are the ovaries? | 2, contain follicles that will grow and mature leading to ovulation |
| What are the fallopian tubes? | oviducts that connet the ovaries to the rest of the system. fertilation occurs here. |
| What is tubal ligation? | Tubes tied, sealing off fallopians |
| What is the uterus? | Accepts a fertilization egg from the fallopian tube |
| What is the myometrium? | the muscular portion of the uterus designed for contraction |
| What is the endometrium? | highly vascularized lining of the uterus |
| What is the cervix | the narrowing of the uterus that dilates during childbirth to allow passage to the rest of the birth canal |
| What is the vagina? | connection of the system to the outside environment |
| What are the functions of the vagina? | accepting sperm from the male system, serving as the lower portion of the birth canal, preventing infection of the upper system |
| Acid pH of the female system | stays about 3, deters microbial growth |
| Normal flora of the vagina? | Keeps pathogens in check |
| What is oogenesis? | process occurs in the ovaries and begins during fetal development |
| What is a follicle composed of? | potential egg cell and nourishing cells (granilocell) |
| The avg number of follicles at birth is ? | 2 million |
| When do some follicles begin dying? | immediately |
| Do females run out of eggs> | no |
| When does meiosis begin | Before birth but then arrests |
| When does the process resume? | puberty, beginning at the age 11-14 |
| how many follicles complete meiosis | 1 |
| How often does meiosis happen | every 28 days |
| Meiosis 2 does not occur unless? | fertilization |
| The final result of oogenesis is? | 1 egg and 5 polar bodies, purpose of bodies is to increase chances of survival |
| Why is more likely for their to be more complications with egg production in older women? | because the egg can fall apart |
| The menstrual cycle begins when? | puberty age 11-14 |
| When does the menstrual cycle end? | menopause around age 50 |
| What are the phases of the menstrual cycle? | menses, proliferative phase, secretaory phase |
| What are the phases of the reproductive cycle? | pre-ovulatory phase, ovulatory phase, post-ovulatory phase |
| What are the chemical birth controls methods? | Birth control pills, minipills, implanon, mirena intra-uterine device, shots, the patch, the nuva ring, emergency contraception, RU486 |
| Explain the phase menses? | days 1-7, deals with releasing the existing endometrium from the uterus |
| explain what happens in the menses with hormones? | arteries constrict and cut off blood flow, lack of glucose and O2 to tissue which causes them to die, tissue leaves system through menstrual fluid. |
| Explain the proliferative phase | days 8-14, ovaries prepare for follicle release, under hormaonal control |
| Explain secretory phase? | days 15-28, uterus ready to receice embryo, ovaries release egg, |
| What happens if fertilization occurs in the secretory phase? | the embryo will implant into the endometrium days later, if not the cycle will begin again |
| What structures are involved in the hormone release in the reproductive cycle? | hypothalmus, anterior pituitary, ovaries, and corpus luteum |
| Explain the pre-ovulatory phase? | days 1-3, when gonadotropin releases the hormone GnRH from hypothalmus. |
| When does hormone release occur in pre-ovulatory phase? | When hormones estrogen and progesterone are low |
| What hormones release when GnRH is present? | Fsh and LH |
| What structure relases hormones fsh and Lh | anterior pituitary |
| FSH causes | stimulates growth of several follicles from arresting phase, day 3 of cycle |
| LH causes | rupture of follicle (ovulation), promotes development of corpus luteum |
| After hormones fsh and Lh are released what happens? | follicles will begin to secrete estrogen which causes the release of LH |
| The more estrogen released..... | the more LH and less FSh released from the pituitary |
| Explain ovulatory phase? | day 14, estrogen levels at peak!, release of Lh causes follicle to to rupture and egg is released from ovary |
| Explain pre-ovulatory phase? | days 15-28, egg is in fallopian tube where fertilization occur..remains of follicle stay and form corpus luteum. |
| What secretes estrogen and progesterone? | corpus luteum |
| Estrogen secreted... | causes estradiol, prepares endometrium for implantation, responsible for maintenance of secondary sex characteristics |
| Progesterone secreted... | causes maintenance of preganancy |
| If there is no GnrH | fsh and Lh will not be secreted. |
| Estrogen and progesterone supress? | GnRH |
| What are the structures of the male reproductive system | testes, epididymis, vas deferens, urethra, seminal vesicles, prostate, bulbourethral |