0
yes
first enter into the hypophyseal portal system
1) Hepatic Portal Vein
2) Renal Portal System
3) Hypothalamic-Hypophyseal Portal System
not so sure about number 2 :P
the Hypophyseal Portal System.
It carries blood directly from the hypothalmus to the adenohypohysis. It allows a small amount of hormone to be delivered directly to the target tissue without dilution.
The hypophyseal portal veins.