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 its conditions in response to internal and external changes.
• What happens when we walk out in the snow or run in the Sahara desert?

  Our body regulates to keep 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 do the three components of the automatic control system need to communicate?

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

  By sending 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 endocrine system differ from the nervous system?

  It is generally slower, longer-lasting, and more generalized.
• What is the mechanism called that regulates homeostasis?

  Negative feedback.
• How does negative feedback work in homeostasis?

  It decreases levels that are too high and increases levels that are too low.
• What happens when the level of glucose in the blood gets too high?

  Negative feedback decreases it to return to normal.
• What occurs if the temperature in a room is too cold?

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

  They can contract to generate heat through shivering.
• What happens if the body temperature rises too high?

  A different set of receptors detects the rise and sends signals to coordination centers.
• What is the overall process of homeostasis?

  It is the maintenance of a stable internal environment through feedback mechanisms.
• What are the key components of the automatic control systems in homeostasis?

  • Receptors: Detect changes
  • Coordination centers: Interpret changes
  • Effectors: Carry out responses
• How do the nervous and endocrine systems differ in their functions?

  • Nervous system: Fast, precise electrical impulses
  • Endocrine system: Slower, longer-lasting hormonal signals
• What is the process of negative feedback in homeostasis?

  • Detects when levels are too high or too low
  • Decreases levels that are too high
  • Increases levels that are too low