Which organ system includes the brain and nerves that coordinate function?

• A. Cardiovascular
• B. Integumentary
• C. Neurological
• D. Hematologic

Answer: (C)

Coordination of body function is the job of the nervous system, which uses the brain as the control center and nerves as communication networks to muscles and organs. This system processes sensory information, initiates movement, and regulates many ongoing processes. The best answer describes the neurological system, which encompasses the brain and the nerves. The other choices point to different body systems — cardiovascular for heart and vessels, integumentary for skin and related structures, hematologic for blood and blood-forming tissues — none of which primarily coordinate function via brain and nerves.