Homeostasis

• What is homeostasis?


  Homeostasis is the maintenance of a stable internal environment in the body.
• Why is homeostasis important for cells?


  Cells need the right conditions to function properly, including conditions for enzymatic action.
• What does homeostasis regulate in the body?


  Homeostasis regulates the conditions inside the body and cells in response to internal and external changes.
• What types of communication systems are involved in homeostasis?


  Nervous and hormonal communication systems are involved in homeostasis.
• What are some examples of control systems in the body?


  Control systems maintain body temperature, blood glucose level, and water content.
• What are the three main components of automatic control systems in the body?


  • Receptors
  • Coordination centres (e.g., brain, spinal cord, pancreas)
  • Effectors
• How does negative feedback work in homeostasis?


  Negative feedback counteracts changes by bringing levels back to normal when they are too high or too low.
• What happens when a receptor detects a stimulus that is too high?


  The receptor sends information to the coordination centre, which organizes a response to lower the level.
• What is the role of the coordination centre in homeostasis?


  The coordination centre receives and processes information, then organizes a response.
• What do effectors do in the homeostasis process?


  Effectors produce a response that counteracts the change and restores the optimum level.
• What might happen if effectors continue to produce responses without stopping?


  This could cause the level to change too much away from the ideal condition.
• How does the body know to restart negative feedback?


  The receptor detects if the level becomes too different and negative feedback starts again.
• Is the process of homeostasis automatic or manual?


  The process of homeostasis is automatic.