HIIIIIIIII! doing a year 11 sac on Homeostasis! studying my butt off but just incase I am missing anything what are key bits I need to know and remember? TIA
Hey! It's likely that your teachers will base your SAC on the points in the study design, the ones below relate to homeostasis.
- How regulation of factors is needed to maintain a relatively constant internal environment, explained by the stimulus-response model and the use of homeostatic mechanisms including feedback loops
- Factors regulated by homeostatic mechanisms in humans, including temperature, blood glucose and water balance
- Malfunctions in homeostatic mechanisms that result in diseases, including Type 1 diabetes and hyperthyroidism in humans.
A key parts of homeostasis to note is that too much or too little can be dangerous! The body has a many sophisticated biochemical and physiological mechanisms to keep variable such as temperature, ion concentrations and the pH of different areas of the body in a narrow range. It's also good to note examples for the two types of feedback loops, blood clotting is a good example of a positive feedback loop and thermoregulation is a good example of a negative feedback loop. If you've gone over it in class, you should definitely revise hyperthyroidism and type 1 diabetes too!
I hope this helps!!