homeostasis

• What is homeostasis?


  It is the process of maintaining a stable internal environment.
• Why do cells in the body need certain conditions to function properly?

  Because they cannot be too hot, too cold, too acidic, or too alkaline.
• What are some essential supplies that cells need to function?

  Glucose and water.
• How does the body regulate internal conditions?

  By keeping everything around the right levels.
• Do our temperature and glucose levels remain constant?

  No, they fluctuate but only within small bounds.
• What is the definition of homeostasis?

  It is the regulation of conditions inside the body to maintain a stable internal environment.
• How does the body maintain its internal environment despite external changes?

  By regulating the body to respond to external conditions.
• What happens when we walk out in the snow regarding body temperature?

  The body regulates to maintain cells at 37 degrees Celsius.
• What are the three main components of automatic control systems in the body?

  Receptors, coordination centers, and effectors.
• What do receptors do in the automatic control system?

  They detect changes such as a rise in temperature.
• What role do coordination centers play in the automatic control system?

  They interpret changes and decide what needs to be done.
• What are effectors in the context of homeostasis?

  They are the components that carry out the change, like muscles or glands.
• Why is communication between the components of the automatic control system necessary?

  Because the components might be in different parts of the body.
• How does the nervous system communicate in the body?

  It sends fast and precise electrical impulses through nerves.
• What is the role of the endocrine system in homeostasis?

  It relies on hormones that affect certain cells with the right receptors.
• How does the speed of the endocrine system compare to the nervous system?

  The endocrine system is generally slower and longer-lasting.
• What is the mechanism called that regulates levels in the body?

  Negative feedback.
• What happens when the level of something gets too high in the body?

  Negative feedback decreases it to return to normal.
• What occurs if the level of something gets too low?

  Negative feedback will increase it again.
• How does negative feedback work in homeostasis?

  • Detects changes in levels (e.g., glucose)
  • If levels are too high, it decreases them
  • If levels are too low, it increases them
  • Maintains stable internal conditions
• What happens when we enter a cold room regarding temperature regulation?

  Receptors detect low temperature and send signals to coordination centers.
• What is the response of effectors when the body temperature is too low?

  Muscles may contract to produce heat, like shivering.
• What happens if the body temperature rises too high?

  Receptors detect the rise and send signals to coordination centers.
• What is the overall process of homeostasis?

  It is the maintenance of a stable internal environment through feedback mechanisms.
• What is the loop of homeostasis in response to changes?

  • If levels get too low, automatic control systems increase them
  • If levels get too high, control systems decrease them
  • Maintains stability through continuous feedback