Certified Electronic Health Records Specialist (CEHRS) Practice Exam

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What is the function of the endocrine system?

  1. Transport nutrients across membranes

  2. Effects changes through chemical messengers

  3. Control voluntary movements

  4. Filters waste from blood

The correct answer is: Effects changes through chemical messengers

The function of the endocrine system is to effect changes in the body's functions through the release of hormones, which act as chemical messengers. These hormones are secreted directly into the bloodstream and travel to various organs and tissues to regulate processes such as metabolism, growth, reproduction, and mood. By using hormones, the endocrine system can influence a wide range of physiological activities in a slow and sustained manner, contrasting with the rapid responses typically governed by the nervous system. This ability to communicate through chemical signals facilitates coordination among different body systems, such as regulating blood sugar levels with insulin or controlling stress responses with cortisol. The other options, while important functions in the body, describe systems or mechanisms that are not specifically related to the role of the endocrine system. For instance, transporting nutrients across membranes is more closely associated with the digestive and circulatory systems, controlling voluntary movements pertains to the muscular and nervous systems, and filtering waste from the blood describes a function of the renal system.