Cells that secrete hormones travel throughout the body in what?
skin deltas blood atoms waves sleep genes breathe
A B C D E F G H
Endocrine cells secrete hormones.
Cells that secrete hormones travel throughout the body in blood
Cells that secrete hormones travel throughout the body in what? (A) skin (B) deltas (C) blood (D) atoms (E) waves (F) sleep (G) genes (H) breathe