Biology Glossary

brain

In The brain (biology only), brain means an organ made of billions of interconnected neurones that controls complex behaviour. This matters in The human nervous system because it supports the learning objective to identify the cerebral cortex as the brain region associated with consciousness, intelligence, memory and language. Use brain only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.