L8 the ovary Flashcards
name the 2 female sex pituitary hormones and the 2 ovarian hormone and tell they role
pituitary hormones: FSH (follicle simulating hormone, pubertal development and growth of follicle) and LH (luteinizing hormone, trigger release of egg)
ovarian hormone: progesterone. estrogen, maintain endometrium and breath growth
what are the 3 region of the ovaries
outer cortex containing follicles, central medulla consisting of stoma and cell with steroid producing,
inner hilum act as point of entre for nerve.
what are the 4 stage of development of follicle and how to differentiate them
primordial follicle no zona pellucida, primary follicle zona pellucida, secondary follicle nucleus primary oocyte, tertiary follicle antrum containing follicular fluid.
describe the uterus
7.5 cm 10 ml volume up to 5 l in pregnancy. 30-40g provide protection, nutriment waste removal. it is kept in place by broad ligament and 3 suspensory ligament.
what are the 3 suspensory ligament of the uterus
Uterosacral, round ligament, lateral ligament
what are the 3 layers of the uterus
endometrium (shed during menstruations) myometrium (10 mm) and endometrium
describe the endometrium
it has 2 layers. Functional zone (contain uterine glands) and basal zone
what is the decidual reaction
it is the thicken of the endometrium prior implantation
what is the blood supply of the endometrium after the decidua reaction
the uterine arteries become radial arteries and then spiral arteries (they are coiled and shed with the functional zone during menses)
describe the fallopian tube
start with infundibulum, then ampulla, then isthmus
what are the function of the cervix
permit entry of sperm into uterus, prevent entre of sperms when not fertile, prevent infection, allow passage of fetus
what are the function of the placenta
Gas exchange, nutrient exchange, heat exchange, antibody exchange, synthetic and secretory function , immunological, separation of maternal and fetal organism.
what are the trimesters
12 weeks (conception)
13-24
25-(36-40)
what happen during the lacunar phase 8-12
primitive syncytium invade the uterine decidua. trophoblast protrusion (trabeculae)
lacunae tap maternal blood vessel
what happen during the villous period 12-18
cytotrophoblast proliferate and invade the trabeculae (now primary villi)
lacunar system is now intervillous space
extraembryonic mesenchyme invade primary villi (2sd)
