Explore comprehensive information about major body systems, their functions, and related health conditions. Click any system to view related articles and learn how your body works.
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The human body is organized into different systems, each with specialized functions that work together to maintain health. Major body systems include the cardiovascular system (heart and blood vessels), nervous system (brain and nerves), respiratory system (lungs and airways), digestive system (stomach and intestines), skeletal system (bones and joints), muscular system, immune system, endocrine system (hormones), and sensory systems.
Understanding how your body systems work helps you make informed decisions about your health. Click on any system above to view conditions, symptoms, and treatments related to that system.