Controlling Body Temperature and Blood Glucose
- Created by: Moodymoo
- Created on: 27-04-14 14:13
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- Controlling Body Temperature
- Body temperature needs to stay at 37'' this is your core body temperature
- Basic Temperature Control
- Control of your core body temperature relies on thermoregulatory centre
- This is in your brain and contains receptors that are sensitive to temperature changes
- They monitor the temperature of blood flowing through the brain
- This is in your brain and contains receptors that are sensitive to temperature changes
- There are also receptors in the skin that send impulses to -->
- Less blood flows through your skin so you loose less energy
- Blood vessels constrict, reduces the amount of energy lost by radiation
- May shiver, muscles contract and relax rapidly, this needs respiration which releases energy, raising your body temperature
- Hairs are pulled erect to trap insulating layer of air
- Control of your core body temperature relies on thermoregulatory centre
- Controlling Blood Glucose
- Cells need a constant supply of glucose for respiration
- Insulin
- Pancreas monitors and controls your blood glucose concentration, using insulin
- When your blood glucose concentration rises after you have eaten a meal insulin is released
- Insulin allows glucose to move from the blood into your cells where it is used
- Soluble glucose is converted into an insoluble carbohydrate called glycogen
- Insulin controls the amount of glycogen stored in the liver
- Glycogen can be converted back to glucose when needed
- When your blood glucose concentration falls below the ideal range the pancreas secrete glugagon
- Glucagon makes your liver break down glycogen, converting it into glucose
- Pancreas monitors and controls your blood glucose concentration, using insulin
- Diabetes
- If your pancreas don't make enough or any insulin you have type 1 diabetes
- Blood glucose levels will get really high after you eat
- Without insulin glucose cant get into the cells in your body so you lack energy and feel tired
- You break down fat and protein to use as fuel instead so you loose weight
- Insulin is normally injected before a meal
- As a result glucose levels are then kept normal
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