Term
| gonadal steroidogenesis works as the result of functional cooperation between how many cell types? |
|
Definition
|
|
Term
| what are the two types of cells used in male gonadal steroidogenesis? |
|
Definition
leydig cells
sertoli cells |
|
|
Term
| what are the two types of cells used in female gonadal steriodogenesis? |
|
Definition
theca cells
granulosa cells |
|
|
Term
|
Definition
regulation of hormone levels
(control of basal levels and pulsatile release) |
|
|
Term
|
Definition
| the level around which hormone concentrations are regulated |
|
|
Term
| what are the two types of feedback mechanisms? |
|
Definition
|
|
Term
| negative feedback acts like a what? |
|
Definition
|
|
Term
| what is a long-loop feedback? |
|
Definition
| the gonad is used as an intermediae and the site of feedback is at the locus ceruleus, hypothalamus and pituitary |
|
|
Term
| what is a short-loop feedback? |
|
Definition
| direct feedback by tropic hormones |
|
|
Term
| what is an ultrashort feedback? |
|
Definition
| releasing hormones and tropic hormones feedback on themselves |
|
|
Term
| what does positive feedback control in females? |
|
Definition
| LH surge and therefore ovulation |
|
|
Term
| what regulates the anterior hypothalamic - preoptic - suprachiasmatic - center (APS)? |
|
Definition
|
|
Term
| described inhibin and activin |
|
Definition
small polypeptides made in the sertoli cells - feeds back to regulate FSH levels
also found in antral fluid of females |
|
|
Term
|
Definition
| produced by adipose cells and stimulates GnRH release |
|
|
Term
|
Definition
| released with GnRH and stimulates LH, but not FSH |
|
|
Term
| what monitors estradiol in females? |
|
Definition
| the anterior hypothalamus |
|
|
