Homeostasis and the Nervous System

Introduction to Homeostasis

• Definition: Maintenance of steady conditions in the body.
• Purpose: Ensures optimal conditions for enzyme action and cell functions.
• Key Factors Controlled:
  • Blood glucose concentration
  • Body temperature
  • Water levels
• Systems Involved:
  • Nervous responses (nervous system)
  • Chemical responses (endocrine system)

The Nervous System

• Function: Enables humans to react to their surroundings and coordinate behavior.
• Communication Method: Uses electrical impulses for quick communication.

Structure of the Nervous System

• Central Nervous System (CNS): Comprises the brain and spinal cord.
• Peripheral Nervous System: Consists of nerve cells that carry information to and from the CNS.

Resources and Further Reading

• Relevant Guides:
  • Coordination and control - The human endocrine system
  • Hormones in human reproduction
  • Homeostasis in humans
  • Plant hormones
  • Sample exam questions on homeostasis and response

Additional Resources

• Biology Exam-style Questions: Link
• Biology Revision Resources: Link
• Revision Podcasts: Link
• Jobs Using Biology: Link

Study and Revision Tools

• Quizlet: Flashcards and learning tools for GCSE Biology.
• Save My Exams: Subscription service for exam practice.
• Revision Buddies: Offers a subscription for revision resources.

Conclusion

Understanding the concepts of homeostasis and the nervous system is crucial for GCSE Biology students, offering insight into how the body maintains balance and reacts to changes.