Keeping Internal Conditions Constant

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  • Created by: Harriet
  • Created on: 28-04-13 17:05
What internal conditions need to be controlled and what is this called?
Your body needs to maintain your body temperature, your water and ion balance and your blood sugar levels. This is called Homeostasis
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What is the difference between Urea and urine?
Urea is made in the liver out of amino acids. Urine is made in the liver and contains Urea.
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What are the functions of your kidneys?
The kidneys are very important for homeostasis. It removes waste products by filtering the blood, this includes Urea which is poisonous to your body. Also important in water balance, it makes sure your body has enough and also gets rid of any excess.
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How do your kidneys work?
They filter the blood and the reabsorb everything the body needs by diffusion, except glucose which is reabsorbed by active transport. Amount absorbed changes to the amount the body needs.
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How does dialysis work?
Cleans the blood when the kidney is no longer able to do so, The dialysis fluid passed by the blood through a partially permeable membrane and cleans the blood by removing excess waste products and urea.
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What monitors your bodies temperature?
The Thermoregulatory centre in your brain.
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How does Shivering keep you warm?
Rapid contracting of your muscles producing energy from increased respiration which raises your body temperature.
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How does sweating keep you cool?
The sweat evaporates, taking heat energy with it to keep you cool.
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What happens to your blood capillaries when you are too hot or too cold?
When you are too cold, the blood vessels constrict to reduce blood flow to the capillaries. When you are too hot, the blood vessels dilate, letting more blood flow into the capillaries.
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What is the difference between Glucose, Glycogen and Glucagon?
Glucose is a sugar found in the blood, Glycogen is a storage carbohydrate found in the liver and muscles. Glucagon is a hormone.
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What does the pancreas produce and why?
The pancreas produces Insulin which allows the glucose to move from the blood into the cells.
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What does glucagon do?
Glucagon allows glycogen to be converted back into glucose and released into the blood.
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What is type 1 diabetes and how is it treated?
Type 1 diabetes is when the pancreas doesn't produce enough or any insulin so the sugar level in your blood can become fatally high. It can be treated by injections of insulin after meals for the rest of their lives.
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How can type 2 diabetes be treated?
Careful attention to diet and taking more excercise. Sometimes drugs are needed.
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Other cards in this set

Card 2

Front

What is the difference between Urea and urine?

Back

Urea is made in the liver out of amino acids. Urine is made in the liver and contains Urea.

Card 3

Front

What are the functions of your kidneys?

Back

Preview of the front of card 3

Card 4

Front

How do your kidneys work?

Back

Preview of the front of card 4

Card 5

Front

How does dialysis work?

Back

Preview of the front of card 5
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