homeostasis

• What is homeostasis?

  Regulation of internal environment
• Why is homeostasis necessary for cells in the body?

  Cells need stable conditions to function
• What are the conditions that cells need to function properly?

  Not too hot, not too cold, etc.
• What does the body regulate to maintain homeostasis?

  Everything to keep levels around the right bounds
• What is the definition of homeostasis?

  Regulation of internal environment
• What does the phrase "in response to changes in both internal and external conditions" mean in the context of homeostasis?

  Maintaining internal environment despite external changes
• What is the role of receptors in automatic control systems?

  Detect changes from optimal conditions
• What are the three main components of automatic control systems?

  • Receptors
  • Coordination centers
  • Effectors
• What is the role of coordination centers in automatic control systems?

  Interpret changes and decide what to do
• What is the role of effectors in automatic control systems?

  Carry out changes to reverse the initial change
• What systems help send signals between the components of automatic control systems?

  Nervous and endocrine systems
• How does the nervous system send signals?

  Fast and precise electrical impulses
• How does the endocrine system send signals?

  Slow and generalized hormonal signals
• What happens when the level of something gets too high in the body?

  Negative feedback decreases it
• What is the mechanism by which automatic control systems work?

  Negative feedback:

  • Decrease the level if it gets too high
  • Increase the level if it gets too low
• What happens when the level of something gets too low in the body?

  Negative feedback increases it
• What happens when the body detects a low temperature, such as when walking into a cold room?

  Receptors detect the change and send signals to coordination centers
• How does the body respond to the detected low temperature?

  Effectors, such as muscles, carry out responses like shivering
• What is the overall process of maintaining a stable internal environment through negative feedback?

  A loop of detecting changes and reversing them