homeostasis

• Homeostasis


  The regulation of conditions inside the body to maintain a stable internal environment in response to changes in both internal and external conditions
• Cells in the body need certain conditions to function properly, such as not being too hot or too cold, not being too acidic or too alkaline, and having a good supply of glucose and water
• The body regulates everything and makes sure that everything is kept around the right levels
• Temperature and glucose levels do fluctuate, but only within small bounds
• Homeostasis is the regulation of conditions inside the body to maintain a stable internal environment in response to changes in both internal and external conditions
• Automatic control systems


  1. Receptors detect a change

  2. Coordination centres interpret the change and decide what to do

  3. Effectors carry out the change
• Automatic control systems


  • They can recognize when there's a change from optimal conditions and then send a signal to reverse that change so that the levels go back to normal
• Nervous system


  Sends very fast and precise electrical impulses through nerves, allowing for quick responses
• Endocrine system


  Relies on hormones, which are small chemicals released into the bloodstream and affect certain cells with the right receptors; generally slower, longer-lasting, and more generalized than the nervous system
• Negative feedback


  1. Decreases the level of something that is too high to return it to normal

  2. Increases the level of something that is too low to return it to normal
• Homeostasis is the overall process of maintaining a stable internal environment through a loop of negative feedback