Answer
The hypothalamus releases hormones into the blood of the portal circulation, which connects the blood supply of the hypothalamus with that of the anterior pituitary. In the portal circulation, two capillary beds are connected by one or more veins; in this case, the capillaries of the hypothalamus are drained by veins that empty into the capillaries of the anterior pituitary.
Work Step by Step
Same as above.
