Central nervous system composed of?

The Central Nervous System (CNS) is the body's main processing center, responsible for integrating sensory information and coordinating motor responses. It is fundamentally composed of the Brain, Spinal Cord & Nerves. The brain acts as the command center, while the spinal cord serves as the primary pathway for signals between the brain and the rest of the body, also controlling reflexes.

• While 'nerves' typically refer to the Peripheral Nervous System (PNS), within the context of the CNS, 'nerves' can also refer to the bundles of axons or nerve tracts that form crucial communication pathways within the brain and spinal cord themselves, essential for their integrated function.
• Options B and C list only specific parts of the brain (Cerebrum, Thalamus, Hypothalamus, Cerebellum) but not the entire CNS.
• Therefore, option A provides the most comprehensive description of the CNS's main components.