Which system includes the brain and spinal cord?

The system that includes the brain and spinal cord is the Central Nervous System (CNS). This system is responsible for processing and transmitting information throughout the body. The brain serves as the control center for coordinating voluntary and involuntary actions, while the spinal cord acts as a bridge, relaying signals between the brain and the rest of the body. The CNS is crucial for integrating sensory information and formulating responses, thereby enabling functions like movement, perception, and cognitive activities.

In contrast, the Peripheral Nervous System comprises all the nerves outside the CNS and connects the CNS to limbs and organs. The Endocrine System involves glands that release hormones to regulate various bodily functions but does not involve the brain and spinal cord directly. The Musculoskeletal System is concerned with the support and movement of the body through bones and muscles, playing no direct role in processing information like the CNS does.