1 / 15

Understanding Homeostasis in Living Organisms

Learn about homeostasis and its importance in maintaining a constant internal environment in living organisms. Explore negative feedback systems and examples of homeostasis through interactive quizzes. Understand the role of glucoregulation, thermoregulation, and osmoregulation. Discover the effects of external factors on homeostasis.

herbertrodriquez
Download Presentation

Understanding Homeostasis in Living Organisms

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Homeostasis L.O: to define homeostasis and explain how homeostasis occurs Starter: Year 11 homeostasis quiz – what can you remember from two years ago??!

  2. Homeostasis Definition: Homeostasis is maintenance of a constant internal environment within a living organism. Homeo = same Stasis = state

  3. Negative Feedback A series of changes that result in a substance being restored its normal / optimum level. Can you put the parts of a negative feedback system in the correct order? Then match up the sections with their correct description. Ask me to check before you glue them down! Once you’ve done, try to write an example of negative feedback next to each section. E.g a waterbath getting too hot – what would happen?

  4. Negative Feedback A series of changes that result in a substance being restored its normal / optimum level.

  5. What needs to be regulated by such a control system?

  6. Examples of Homeostasis(in a quiz stylee!) 1:

  7. Examples of Homeostasis(in a quiz stylee!) 2:

  8. Examples of Homeostasis(in a quiz stylee!) 3:

  9. Examples of Homeostasis • Glucoregulation = keeping blood sugar levels constant • Thermoregulation = keeping body temperature constant at …?...°c • Osmoregulation = keeping water and ion levels constant

  10. Osmoregulation • If your blood water conc falls…

  11. Osmoregulation • If your blood water conc falls… • This is detected by osmoreceptors in the hypothalamus…

  12. Osmoregulation • If your blood water conc falls… • This is detected by osmoreceptors in the hypothalamus… • Pituitary gland releases ADH (anti-diuretic hormone) into the blood…

  13. Osmoregulation • If your blood water conc falls… • This is detected by osmoreceptors in the hypothalamus… • Pituitary gland releases ADH (anti-diuretic hormone) into the blood… • This makes your kidney tubules more permeable to water…

  14. Osmoregulation • If your blood water conc falls… • This is detected by osmoreceptors in the hypothalamus… • Pituitary gland releases ADH (anti-diuretic hormone) into the blood… • This makes your kidney tubules more permeable to water… • So you absorb more water!

  15. Osmoregulation However… Alcohol interferes and reduces the effect of ADH… what consequences does this have on your body?? Interestingly… Boxers and jockeys who want to lose weight use diuretic drugs… how would this work??

More Related