Spermatogenesis

Question 1

in males, what forms the repro tract? what degenerates?

Answer 1

wolffian ducst

mullerian degen

Question 2

in females, what forms the repro tract? what degenerates?

Answer 2

mullerian ducts

wolffian degen

Question 3

what stimulates differentiation of external genitalia?

Answer 3

dihydrotestosterone

Question 4

what do sertoli cells secrete?

Answer 4

seminiferous tubule fluid

androgen binding globulin

Question 5

what do leydig cells secrete?

Answer 5

testosterone

Question 6

at what age, in males, does GnRH release begin?

Answer 6

8-12yrs

Question 7

what do FSH and LH act on in males?

Answer 7

FSH - sertoli

LH - leydig

Question 8

when FSH acts on them, what do sertoli cells do?

Answer 8

secrete ABG, which binds to testosterone in the seminiferous tubule

Question 9

when LH acts on them, what do leydig cells produce? what does it do?

Answer 9

testosterone
binds with ABG produced by sertoli cells
OR
negative feedback on pituitary

Question 10

what can sertoli cells also secrete? what does this do?

Answer 10

inhibin

negative feedback on anterior pituitary