Hormones 3 - Revision
- Created by: Ammarah123
- Created on: 21-01-18 15:46
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- Animal Coordination, Control and Homeostasis
- Homeostasis- Control of Blood Glucose
- Maintaining a constant internal environment
- 1 Conditions in your body need to be kept steady- this is important as your cells need right conditions in order to function properly.
- 2 To maintain a constant internal environment, your body needs to respond to both internal and external changes whilst balancing inputs with outputs
- 3 Examples of homeostasis include:
- * Blood glucose- you need to make sure the amount of glucose in your blood doesn't get too high or low
- * Osmoregulation (regulating water content)- you need to keep a balance of water you gain (in food, drink and from respiration) and the water you pee, sweat and breathe out
- * Thermoregulation (regulating body temperature)- you need to reduce your body temperature when you're hot, but increase it when the environment is cold
- * Osmoregulation (regulating water content)- you need to keep a balance of water you gain (in food, drink and from respiration) and the water you pee, sweat and breathe out
- * Blood glucose- you need to make sure the amount of glucose in your blood doesn't get too high or low
- Insulin and Glucagon control Blood Glucose Concentration
- 1 Eating foods containing carbohydrate puts glucose into the blood from the small intestine
- 2 The normal metabolism of cells remove glucose from the blood
- 3 Vigorous exercise removes much more glucose from the blood
- 4 Excess glucose can be stored as glycogen in the liver and in the muscles
- 5 When these stores are full then the excess glucose is stored as lipid (fat) in the tissues
- 6 Changes in blood glucose are monitored ad controlled by the pancreas, using the hormone insulin and glucagon
- Diabetes
- Type 1 Diabetes- Caused by a Lack of Insulin
- 3 As well as insulin therapy, people with type 1 diabetes also need to think about:
- * Limiting the intake of foods rich in simple carbohydrates i.e. sugars (which cause the blood sugar glucose level to rise rapidly)
- * Taking regular exercise- this helps to remove excess glucose from the blood
- * Limiting the intake of foods rich in simple carbohydrates i.e. sugars (which cause the blood sugar glucose level to rise rapidly)
- 2 A person with type 1 diabetes will need to be treated with insulin therapy- this usually involves injecting insulin into the blood
- This is often done at mealtimes to make sure that the glucose is removed from the blood quickly once the food has been digested.
- This stops the level of glucose in the blood from getting too high and is a very effective treatment
- This is often done at mealtimes to make sure that the glucose is removed from the blood quickly once the food has been digested.
- 1 Type 1 diabetes is a condition where the pancreas produces little or no insulin. The result is that a person's blood glucose can rise to a level that can kill them
- 3 As well as insulin therapy, people with type 1 diabetes also need to think about:
- Type 2 Diabetes- A person is Resistant to Insulin
- 1 Type 2 diabetes is a condition where the pancras doesn't produce enough insulin or when a person becomes resistant to insulin
- BMI = weight (kg) / (height(m))²
- Waist- to- hip ratio = waist circumference (cm) / hip circumference (cm)
- 4 Type 2 diabetes can be controlled by eating a healthy diet, getting regular exercise and losing weight if needed. Some people with type also have medication or an insulin injection
- 2 People that arte obese have a higher risk of developing type 2 diabetes
- Type 1 Diabetes- Caused by a Lack of Insulin
- Homeostasis- Control of Blood Glucose
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