Which part of the neurological system is critical for overall brain function including cognitive processes?

The cerebrum is essential for overall brain function because it is responsible for higher cognitive processes such as thought, reasoning, problem-solving, and planning. It comprises various lobes, each dedicated to different functions, including the frontal lobe, which is vital for decision-making and executive functions, and the parietal lobe, which integrates sensory information. Furthermore, the cerebrum plays a key role in memory, emotion, and social interactions, all of which are critical aspects of cognitive processes. The structural complexity and the extensive neural connections within the cerebrum allow for advanced processing and integration of information, making it crucial for everyday functioning and complex behaviors. This central role in cognition underscores its importance over other parts of the brain.