Oregon Certified Nursing Assistant State Practice Exam

Which are the three main sections of the brain?

1. Cerebrum, cerebellum, brainstem

2. Cerebrum, central nervous system, cerebral cortex

3. Cerebrum, spinal cord, brainstem

4. Cerebrum, spinal cord, peripheral nervous system

The correct answer is: Cerebrum, cerebellum, brainstem

The three main sections of the brain are indeed the cerebrum, cerebellum, and brainstem. Each of these components plays a vital role in the overall functioning of the nervous system. The cerebrum is the largest part of the brain and is responsible for higher brain functions, including thought, action, and emotion. It is where the majority of cognitive functions and voluntary movements are processed. The cerebellum, located under the cerebrum, is crucial for coordination and balance. It helps in the fine-tuning of motor activities, ensuring that movements are smooth and balanced. The brainstem connects the brain to the spinal cord and regulates essential life functions such as breathing, heart rate, and blood pressure. It serves as a pathway for signals traveling between the brain and the body. This provides a clear understanding of why this particular choice accurately represents the three main sections of the brain and highlights their distinct roles in maintaining bodily functions and facilitating our cognitive abilities.