a. Hormones are secreted by a(n) _______________________ glandand travel long distances through the _________________(ly

[answerhappygod]

a. Hormones are secreted by a(n) _______________________ glandand travel long distances through the _________________(lymph, blood, cytoplasm, or water?).
b. Hormones are only able to act on cells that have the appropriate ________________________ (hint: what is the Y-shaped structure on the target cells in the cartoon?).
c. Maintaining ________________________ is like being in balance. Restoring that balance is the job of ____________________ .
d. Once balance is achieved, _____________________ (negative or positive?) feedback turns off production of the hormone so that you don’t have too much of that effect.