Which body system integrates the brain, spinal cord, and nerves to regulate body functions?

Which body system integrates the brain, spinal cord, and nerves to regulate body functions?

• A. Endocrine system
• B. Nervous system
• C. Stratum lucidum
• D. Sebum

Answer: (B)

Think of the nervous system as the body's control network, connecting the brain and spinal cord with every nerve to coordinate movement, sensation, and reflexes. It uses rapid electrical signals to process information and send precise commands, allowing quick integration and regulation of body functions. The endocrine system also regulates processes, but by hormones and on a slower timescale, not through direct neural signaling. The other options aren’t systems that manage brain–spinal–nerve integration—one is a skin layer and the other an oily secretion from glands. So the nervous system is the best answer.

Think of the nervous system as the body's control network, connecting the brain and spinal cord with every nerve to coordinate movement, sensation, and reflexes. It uses rapid electrical signals to process information and send precise commands, allowing quick integration and regulation of body functions. The endocrine system also regulates processes, but by hormones and on a slower timescale, not through direct neural signaling. The other options aren’t systems that manage brain–spinal–nerve integration—one is a skin layer and the other an oily secretion from glands. So the nervous system is the best answer.