4.8 Recognize that the body’s systems interact to maintain homeostasis. Describe the basic function of a physiological feedback loop.
Vocabulary Tier 3
Homeostasis - maintaining internal conditions, a balance Physiological Feedback Loop - when the body reacts to changes in the body to save your life and then settles down to normal functioning when all is well
Essential Questions 1. How does a physiological feedback loop work?
2. Why does the body need to maintain homeostasis?
Homeostasis
The body wants to maintain or keep its conditions inside perfect and in balance
Homeostasis examples:
1. When you eat sugar, your pancreas releases insulin to get the sugar out of the blood and into the cells. When your sugar is low, the pancreas releases glucagon which causes glycogen (stored sugar) to be released into the blood stream. This is also a physiological feedback loop.
2. When you run, your body needs to make you breath more and increases your heart rate because you need more oxygen for your muscle cells to make more energy in your mitochondria.
3. When it's hot out your brain makes you sweat.
4. When it's cold out your brain makes your skin produce goose bumps and the muscles shiver to generate heat.
5. When you haven't had a drink in a while your kidneys make your urine more concentrated to save water, so your pee looks more yellow.