Fact 1: Most pituitary hormones control other endocrine glands. Fact 2: Endocrine organs are ductless glands that secrete hormones into the bloodstream. Given the two facts above, most pituitary hormones control other glands that secrete hormones into the what?
Available options:
A). brain.
B). humans.
C). epidermal.
D). bloodstream.
E). nerves.
F). layers of fat.
G). alveoli.
H). liver.
D).