Ovarian and Uterine Anatomy Flashcards
CRAM (25 cards)
Myometrium
Muscular layer of the uterus
Endometrium
Vascular layer of the uterus
Cervix
Muscular opening to the uterus
Ovaries
Composed of ovarian follicles, store maturing egg
Oogonia
Female stem cells divide to become Primary oocytes
Primary Oocytes
Become Primary Follicles
The two cycles
Ovarian and Uterine
Corpus Luteum
Hormone factory, produces progesterone
Days 1-5 of cycle
Menses, endometrium is starved of oxygen and sloughs off.
Days 6-14 of cycle
Follicular (Proliferative) phase, FSH is released by pituitary, causes primary follicles and secondary oocyte to develop. Estrogen thickens endometrium.
Day 14 of cycle
Ovulation begins, surge in lutenizing hormone causes follicle with egg inside to rupture and release egg. Follicle becomes the Corpus Luteum
Days 15-28 of cycle
Secretory/Luteal, Corpus Luteum produces progesterone, thickens endometrium, causes secretion of nutrients to feed possible embryo
Progesterone
Inhibits FSH production, prevents a double pregnancy from starting
Estrogen
Helps rebuild endometrium
Lutenizing hormone
Stimulates estrogen and progesterone
Sperm is present during ovulation
Sperm acrosomes rupture and break down egg cells, sperm enters egg and embryo begins to develop
Sperm is not present during ovulation
LH levels drop, corpus luteum falls apart, endometrium layer dies and then cycle repeats at menses
Prolactin
Stimulates and maintains milk production
Oxytocin
Stimulates contractions of the uterus during labor and orgasm. Causes milk to flow when breastfeeding
hCG
Stimulates progesterone and estrogen, keeps endometrium thick, inhibits menses
Placenta
Delivers nutrients and oxygen, removes wastes and produces hormones
Areola
Has specialized glands to moisturize skin
Lactiferous ducts
Carry milk, lead to pores on the nipples
Lobules
Secrete and store milk