unit 15 reproductive Flashcards
common purpose of reproductive organs
produce gametes and secrete hormones
endocrine products of testes
testosterone
exocrine products of testes
spermatozoa; seminiferous tubules
composition of semen
sperm (from testes) and fluid (from seminal vesicles)
circumcision
removal of foreskin - prepuce
erection
when erectile tissue fills with blood during sexual excitement
ejaculation
sperm is propelled to ductus deferens
vasectomy
cut off vas deferens at level of testes to prevent sperm travel
spermatogenesis
stimulated by FSH; 2n - n; meiosis 1 and 2 division
meiosis
2 divisions; 46 chromosomes to 23 sex cells
structure of sperm
tail= movement
acrosome= contains nucleus that releases enzymes
midpiece= mitochondria
FSH effect on testes
create sperm
LH effect of testes
testosterone production
vesicular follicle
growing follicle with a maturing oocyte
corpus luteum
follicle minus ejected egg
oogenesis
producing ova
oogenesis compared to spermatogenesis
sperm need to be made when females already have eggs readily available
FSH influence on ovary
mature the egg; meiosis inside follicle
LH influence on ovary
causes ovulation
several ways pregnancy alters body
- enlargement of uterus
- lordosis
- relaxation of pelvic ligament and public symphysis
- GI system - urinary - respiratory - cardiovascular
stages of labor
dilation
expulsion
placental stage
seminiferous tubules
sperm formation
follicle cells surrounding immature egg will
produce estrogen
progesterone targets
breasts and uterus
3 stages
menstruation stage (3-5 days)
proliferation stage (6-14 days)
secretory stage (15-28 days)
sperm + egg =
zygote (46; 2n)
- embryo
- fetus
I maturing follicle produces how many sperm
4
I maturing follicle produced how many eggs
1
epididymis
transport and mature sperm
mammary glands
influenced by hormones; oxytocin and prolactin
fertilization takes place
in uterine tube
hCG
hormone detected on pregnancy stick
endometrium
inner wall of uterus
amnion
fluid filled sac around embryo
