lecture 33: reproductive system

Question 1

mesothelium

Answer 1

peritoneum (ovaries are covered in it) made up of simple squamous

a membrane that covers and protects most internal organs

Question 2

corpus luteum

Answer 2

source of ovarian hormones important for preg, “yellow body”

Question 3

Hilum

Answer 3

blood vessels come in and out

Question 4

Pituitary Hormones

Answer 4

start to develop into primary ovarian follicles, once they become primary and continue growing become secondary

Question 5

embryo

Answer 5

serves as a form of nutrients for baby until placenta takes over

Question 6

baby girls are born with what…

Answer 6

primordial ovarian follicle

Question 7

FSH

Answer 7

Follicle stim hormone

Question 8

Zona pellucida

Answer 8

remains with oocyte after fertilization

Question 9

antrum in an ovarian follicle

Answer 9

fluid that fills cavity

Question 10

hypothalamic-pituitary-ovarian axis

Answer 10

hypothalamus -> (follicle stim hormone) GnRH -> anterior pituitary -> FSH/LH -> ovary -> estrogen, inhibin, progesterone

happens @ puberty the release of FSH and LH from anterior pituitary

Question 11

uterus has to be in a ________ state to accept embryo

Answer 11

receptive

Question 12

ovarian hormone levels

Answer 12

• estrogens: prepare uterus to repopulate
• as follicle grows, so does level of estrogen
• progesterone: helps maturation of endometrium

follicles become tertiary -> LH increase -> rupture of follicle every time a woman ovulates

everything happens like clockwork

Question 13

1. what does FSH trigger?
2. what does LH do?
3. what does progesterone and estrogen do?
4. what happens when implantation happens?
5. what does corpus luteum do?

Answer 13

1. FSH triggers growth and development of follicles
2. LH also does what FSH does, LH important for ovulation and maintenance of corpus luteum
3. Progesterone and estrogen also inhibit LH and FSH. Estrogen helps pre ovulatory phase.
4. Postovulatory phase is when implantation happens lining of uterus fully matured.
5. Corpus luteum produces progesterone and estrogen if it degenerates because no LH or implantation -> there is a negative signal
   (look at diagrams on lecture 33)

Question 14

journey of an egg

Answer 14

1: egg leaves ovary
2: sperm enters egg and unites with nucleus
implementation happens around here
3: fertilized egg divides
4. cells attach in uterus
5. oocyte is released into fallopian tube