Certain organs and tissues use _____ to send messages to target cells.

Question

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Hormones are chemical messengers secreted by certain organs and tissues (such as endocrine glands) that travel through the bloodstream to reach target cells and regulate various physiological processes. Enzymes are involved in catalyzing biochemical reactions, lacteals are lymphatic vessels in the small intestine, and bonds are a type of chemical connection.

Certain Organs and Tissues Use _____ to Send Messages to Target