Which body system is indicated by arrhythmia?

• A. Digestive system
• B. Cardiovascular system
• C. Nervous system
• D. Respiratory system

Answer: (B)

Arrhythmia refers to an abnormal heartbeat rhythm, which indicates a problem with the electrical conduction system of the heart. The cardiovascular system is responsible for the circulation of blood throughout the body, and it includes the heart and blood vessels. Conditions affecting the heart's rhythm, such as arrhythmia, are directly associated with the cardiovascular system. Recognizing arrhythmia as a cardiovascular issue is essential in healthcare, as it can lead to serious complications, highlighting the need for medical evaluation and management within this system. The other body systems listed are not related to the function or disorders of heart rhythm, which clarifies why the cardiovascular system is the correct choice.