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Homeostasis

Homeostasis. Glossary. Maintain – keep up. Constant – the same. Internal – inside the body. Environment – surroundings of the body. What is Homeostasis?. Body cells work best if they have the correct Temperature Water levels Glucose concentration

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Homeostasis

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  1. Homeostasis

  2. Glossary • Maintain – keep up. • Constant – the same. • Internal – inside the body. • Environment – surroundings of the body.

  3. What is Homeostasis? • Body cells work best if they have the correct • Temperature • Water levels • Glucose concentration • Your body has mechanisms to keep the cells in a constant environment.

  4. What is Homeostasis? The maintenance of a constant environment in the body is called Homeostasis

  5. Penguins huddling to keep warm

  6. What mechanisms are there to cool the body down? • Sweating • When your body is hot, sweat glands are stimulated to release sweat. • The liquid sweat turns into a gas (it evaporates) • To do this, it needs heat. • It gets that heat from your skin. • As your skin loses heat, it cools down.

  7. Sweating The skin

  8. What mechanisms are there to cool the body down? • Vasodilation • Your blood carries most of the heat energy around your body. • There are capillaries underneath your skin that can be filled with blood if you get too hot. • This brings the blood closer to the surface of the skin so more heat can be lost. • This is why you look red when you are hot!

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