The extrapyramidal system is a network of brain structures that helps regulate involuntary movements and coordination. It includes areas such as the basal ganglia, substantia nigra, and cerebellum. This system plays a crucial role in controlling posture, muscle tone, and the smooth execution of movements, working alongside the pyramidal system, which is responsible for voluntary motor control. Disruptions in the extrapyramidal system can lead to movement disorders, such as Parkinson's disease and Huntington's disease. These conditions often result in symptoms like tremors, rigidity, and abnormal movements. Understanding the extrapyramidal system is essential for developing treatments for these neurological disorders.