What is the primary function of hormones in the endocrine system?

• A. To act as chemical messengers that regulate physiological processes
• B. To provide structural support to cells
• C. To transport oxygen throughout the body
• D. To catalyze metabolic reactions directly

Answer: (A)

Verified step by step guidance

1. Step 1: Begin by understanding the endocrine system. The endocrine system is a network of glands that produce and release hormones, which are chemical messengers that travel through the bloodstream to target organs or tissues.
2. Step 2: Recognize the primary function of hormones. Hormones regulate various physiological processes, such as growth, metabolism, reproduction, and homeostasis, by acting as signaling molecules.
3. Step 3: Evaluate the options provided in the question. Consider each option and determine whether it aligns with the role of hormones in the endocrine system.
4. Step 4: Eliminate incorrect options. For example, hormones do not provide structural support to cells, transport oxygen, or directly catalyze metabolic reactions. These functions are performed by other biological components like proteins, hemoglobin, and enzymes.
5. Step 5: Conclude that the correct answer is: 'To act as chemical messengers that regulate physiological processes,' as this accurately describes the primary function of hormones in the endocrine system.