What are chemical messengers that help regulate bodily functions?

What are chemical messengers that help regulate bodily functions?

• A. Neurons
• B. Hormones
• C. Enzymes
• D. Antibodies

Answer: (B)

Hormones are the chemical messengers that regulate many body functions. They’re produced by endocrine glands and released into the bloodstream, traveling to distant target cells to coordinate processes such as metabolism, growth, reproduction, and responses to stress. This widespread, long-distance signaling is what makes hormones the best answer for regulating bodily functions.

Neurons, while also signaling cells, release neurotransmitters to convey messages mainly across synapses for rapid, localized responses, not broad, systemic regulation. Enzymes are catalysts that speed chemical reactions, not signaling messengers. Antibodies are immune proteins that defend against pathogens, not regulators of normal bodily processes.