physiology reproduction system 1 Flashcards
Functions of mature gonads:
producing gametes (gametogenesis)
female : ova (eggs)
male: spermatozoa (sperm)
secreting sex hormones
female :Oestrogen and progesterone
male : Testosterone
Primary reproductive organs (gonads) Consists of:
- Pair of testes in male
* Pair of ovaries in female
function of testes
sperm production
synthesis and production of testosterone
function of seminal vesicles
production of alkaline fluid containing fructose , this liquid neutralizes acid enviroment in vagina
proteins clot semen after ejaculation
function of prostate
secretes :
citrate - energy for sperm
prostate specific antigen - breaks down clotted semen
Vas deferens
what is it
function
ducts from testes to pelvic cavity
forms ejaculatory duct
penetrates into prostate and joins urethra
sertoli cells
what type of cells
secretes..
epithelium cells
lumenal fluid for sperm transport
androgen binding protein for sperm development
sertoli cells
function
target for
nurture sperm and controls development
regulate spermatogenesis and spermiogenesis by secretion of factors
follicle stimulating hormone (FSH) and testosterone
Leydig cells
type of cell
function
interstital cells
synthesis and secretion of testosterone
Hormonal control of sertoli and leydig
cells
GnRH - gonadotrophin releasing hormone
FSH - follicle stimulating hormone
LH- lutenizing hormone
Spermatozoa
-once in lumen of seminiferous duct, sperm is immotile for 20 days
-get mobility when get to epididymis
-
sperm transport is driven by…
sperm held in…
peristaltic contraction of seminiferous tubule and flow of lumenal fluid
vas deferans until ejaculation
how does ejaculation occur
increased sympathetic nerve activity triggers contraction of epididymis, vas deferens and ejaculatory ducts
ovaries
composed of
enclosed with
function
dense connective tissue
fiborous connective tissue
store and release oocyte
uterus
functions
layers
houses and nourishes fetus
myometrium-smooth muscle
endometrium- epithelial , glands , connective
