spermatogenesis and male infertility Flashcards
what chromosome has the sex determining region on it?
Y chromosome
what are the 2 primitive genital tracts?
wolffian and mullerian
in a male what primitive tract forms the genitals
wolffian ducts
in a female what primitve tract forms the genitals
mullerian ducts
what cells secrete testosterone
leydig cells
where does spermatogeneis take place
seminiferous tubules in testes
roles of the sertoli cells
form blood- testes barrier provide nutrients for developing cells secrete seminiferous tubule fluid secrete andorgen binding globulin secrete inhibin and activin hormone
what is the role of gonadotrophin releasing hormone?
stimulates anterior pituitary to release LH and FSH
what does LH do?
acts on leydig cells which secrete testosterone
what does FSH do?
acts on sertoli cells to enhance spermatogenesis
regulates negative feeback by acting on sertoli cells to secrete inhibin
function of epididymis and vas deferens
exit route from testes to urethra, concentrate and store sperm, site for sperm to mature
function of seminal vesicles
produce semen in ejqaculatory duct
supplu fructose and prostaglandins and fibrinogen
function of prostate
produce alkaline fluid and clotting enzymes to clot semen in female
function of bulbourethral gland
secrete mucus to act as lubricant during sex
erection is under what autonomic control
parasympathetic
ejaculation is sympathetic
