B1.2.5 Controlling Conditions

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  • Created by: Maddi
  • Created on: 13-04-14 19:40
How are conditions inside your body controlled?
Homeostasis.
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Define Homeostasis.
The maintenance of constant internal body conditions.
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Why is it important to control your internal environment?
Your organs cannot work properly if your internal environment keeps changing.
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What do your kidneys control?
Your kidneys control the amount of salt and water lost in your urine. They help to control the balance of water and mineral ions in your body. The concentration of the urine produced by your kidneys is produced by both nerves and hormones.
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What is the ideal body temperature? Why?
It is vital that your deep core body temperature is kept at 37'C. At only a few more degrees above or below the reactions in your cells stop and you will die.
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What is the role of the pancreas in keeping your internal environment balanced?
The pancreas controls the concentration of glucose in your blood which means your body is supplied with a constant supply of energy when they need it.
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Name three ways that water is lost from the body?
Through the skin as sweat. Via the lungs when your breath. Via the kidneys as urine.
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How can the balance between sweat and urine depend on the amount of exercise you do and the weather?
When cold day, no exercise and little sweating = more urine (no sweat) and pale (dilluted). On hot day, exercising, sweating = less urine (lost water through breath when exercise), more colour (more concentrated)
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Other cards in this set

Card 2

Front

Define Homeostasis.

Back

The maintenance of constant internal body conditions.

Card 3

Front

Why is it important to control your internal environment?

Back

Preview of the front of card 3

Card 4

Front

What do your kidneys control?

Back

Preview of the front of card 4

Card 5

Front

What is the ideal body temperature? Why?

Back

Preview of the front of card 5
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