Homeostasis

• What is homeostasis?

  Process of maintaining a stable internal environment
• Why do cells need homeostasis?

  To function properly under certain conditions
• What is homeostasis?

  The regulation of conditions inside the body to maintain a stable internal environment
• Why is it important for cells to maintain a stable internal environment?

  Cells need certain conditions to function properly, such as optimal temperature and pH
• What are the three main components of an automatic control system?

  Receptors, coordination centers, and effectors
• How do the nervous and endocrine systems help maintain homeostasis?

  The nervous system uses fast electrical impulses, while the endocrine system uses slower-acting hormones
• What is the mechanism behind homeostasis called?

  Negative feedback
• How does negative feedback work to maintain homeostasis?

  If a condition goes too high, negative feedback decreases it back to normal; if it goes too low, negative feedback increases it back to normal
• If your body temperature rises, what would happen as a result of negative feedback?

  Sweating would occur to cool the body back down to normal temperature
• How do the nervous and endocrine systems differ in how they help maintain homeostasis?

  The nervous system uses fast electrical impulses, while the endocrine system uses slower-acting hormones
• What are the key components of an automatic control system?

  • Receptors: Detect changes in conditions
  • Coordination centers: Interpret changes and decide on a response
  • Effectors: Carry out the response to restore normal conditions
• How do the nervous and endocrine systems communicate in homeostasis?

  • Nervous system uses fast electrical impulses
  • Endocrine system uses slower-acting hormones released into the bloodstream
  • Nervous system allows for quick, precise responses
  • Endocrine system provides longer-lasting, more generalized responses
• How does negative feedback work to maintain homeostasis?

  • If a condition goes too high, negative feedback decreases it back to normal
  • If a condition goes too low, negative feedback increases it back to normal
  • This creates a self-regulating loop to keep conditions stable
• What is the normal body temperature for humans?

  37 degrees Celsius
• If you were to walk outside in the snow, how would your body maintain its normal temperature?

  Shivering would occur to increase body temperature
• How do the responses of the nervous system and endocrine system differ in maintaining homeostasis?

  The nervous system provides fast, precise responses, while the endocrine system provides slower, more generalized responses
• What are the strengths and weaknesses of the nervous system and endocrine system in maintaining homeostasis?

  Strengths:

  • Nervous system: Fast, precise responses
  • Endocrine system: Slower, more generalized responses

  
  

  Weaknesses:

  • Nervous system: Limited to certain processes
  • Endocrine system: Slower response time