OCR General Certificate of Secondary Education (GCSE) Biology Practice Exam

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What kind of response does the central nervous system coordinate?

  1. Responses to physical changes only

  2. Social and emotional responses

  3. All types of stimuli and responses

  4. Only reflex actions

The correct answer is: All types of stimuli and responses

The central nervous system (CNS) is responsible for processing and coordinating an extensive range of stimuli and responses throughout the body. This includes not only physical changes, such as reactions to environmental factors like light, sound, and temperature, but also social and emotional responses. The CNS integrates sensory information, controls voluntary movements, regulates bodily functions, and plays a crucial role in cognitive processes such as thinking, memory, and decision-making. Therefore, stating that the CNS coordinates all types of stimuli and responses accurately reflects its broad functional capabilities and versatility in managing various interactions within the organism and its environment.

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