Presentation is loading. Please wait.

Presentation is loading. Please wait.

To know the importance of regulating our bodies.

Similar presentations


Presentation on theme: "To know the importance of regulating our bodies."— Presentation transcript:

1 To know the importance of regulating our bodies.
What would happen if we didn’t control … Sugar levels Temperature Water levels Write your answers on a whiteboard

2 To know the importance of regulating our bodies.
Success criteria- State what is meant by homeostasis. Identify what causes blood sugar levels to change. Explain how the hormones insulin and glucagon control blood sugar levels. Explain the symptoms and treatment of diabetes. Carry out an experiment to compare samples of urine. Reflective learners

3 To know the importance of regulating our bodies.
Homeostasis - involves maintaining a constant environment in the body Homeostasis makes sure our body has the correct levels of; Temperature Water Oxygen Carbon dioxide Blood sugar

4 To know the importance of regulating our bodies.
What is a hormone? Hormones are chemical messengers used in the body by the endocrine system. They co-ordinate our organs. Hormones are produced by glands.

5 To know the importance of regulating our bodies.

6 Glucose rises (eat food)
Insulin produced by the pancreas causes glucose to change to glycogen Stored in the liver and muscles Glucose rises (eat food) Normal blood glucose level ( mg/100cm3 blood) Normal blood glucose level ( mg/100cm3 blood) Glucagon released and glycogen converted back to glucose Glucose falls (exercise)

7 Glucose rises (eat food)
produced by the pancreas causes _____ to change to _______ Stored in the and ________ Glucose rises (eat food) Normal blood glucose level (________/100cm3 blood) Normal blood glucose level (________ mg/100cm3 blood ________ released and _________ converted back to glucose Glucose falls (exercise)

8 How the hormones control blood glucose
To know the importance of regulating our bodies. How the hormones control blood glucose Describe what is happening at each labelled point.

9 To know the importance of regulating our bodies.
Put these events into the right order: The events that occur to your blood sugar when you do vigorous exercise Glucose is released into the blood Muscles use up glucose Blood sugar level back to normal again Glucagon tells the liver to convert glycogen to glucose Blood sugar level falls It does not keep falling as pancreas makes glucagon

10 To know the importance of regulating our bodies.
Outline the events that occur to your blood sugar when you do vigorous exercise Muscles use up glucose Blood sugar level falls It does not keep falling as pancreas makes glucagon Glucagon tells the liver to convert glycogen to glucose Glucose is released into the blood Blood sugar level back to normal again

11 To know the importance of regulating our bodies.
Option 1- H Read Diabetes symptoms and treatment sheet. Underline the key words as you read. EXT- Write 5 questions for someone else in the class to answer on this.

12 Boardworks GCSE Science: Biology Controlling Blood Sugar
To know the importance of regulating our bodies. Boardworks GCSE Science: Biology Controlling Blood Sugar The lack of insulin control in a diabetic means that blood glucose levels can rise dangerously high after eating, which can cause cell damage. Option 2- F Symptoms of diabetes develop quickly and can be severe. Initial symptoms include: increased thirst, hunger and production of urine loss of weight, tiredness and nausea. Teacher notes The video slide Controlling Blood Sugar Video accompanies this slide. Photo credit: © siamionau pavel, Shutterstock.com Later symptoms include vomiting and abdominal pain. If untreated, diabetes can lead to coma and even death. 12

13 Boardworks GCSE Science: Biology Controlling Blood Sugar
To know the importance of regulating our bodies. Boardworks GCSE Science: Biology Controlling Blood Sugar Teacher notes Type 1 and 2 diabetes used to be called ‘early’ and ‘late onset’ respectively. These terms are used less these days, in part because the increase in childhood obesity has meant that people are developing type 2 diabetes earlier in life. Option 2- F 13

14 To know the importance of regulating our bodies.
Option 2- F How do we treat type 1 and type 2 diabetes? Half of the class read slide on type 1 and the other half on slide 2. Underline key words. Summarize your ideas on your mini whiteboard.

15 Boardworks GCSE Science: Biology Controlling Blood Sugar
To know the importance of regulating our bodies. Boardworks GCSE Science: Biology Controlling Blood Sugar Type 1 diabetes develops when the insulin-producing cells in a person’s pancreas are destroyed, and their body cannot produce enough insulin. This means that glucose builds up in their blood. Type 1 diabetes often develops in childhood. Option 2- F People with type 1 diabetes must inject themselves with insulin before they eat. This helps to keep their blood glucose at a safe level. The amount of insulin needed depends on how much the person eats and how active they are. Photo credit: © photomak, Shutterstock.com Teacher notes The more active a person is, the more glucose their body uses up, and the less insulin they need. Alternatively, diabetics who eat a lot without exercising will need to inject more insulin. This content is higher tier for OCR Gateway Science. The injection is usually into the subcutaneous fat – the fat that is stored directly beneath the skin. 15

16 Boardworks GCSE Science: Biology Controlling Blood Sugar
To know the importance of regulating our bodies. Boardworks GCSE Science: Biology Controlling Blood Sugar Type 2 diabetes develops when a person’s body becomes resistant to insulin. This type typically affects people over 40 years old, and accounts for 85–95% of people with diabetes. Option 2- F Most people with type 2 diabetes can manage their illness through diet and exercise. Physical activity will reduce the amount of glucose in the blood. Photo credit: © Maridav, Shutterstock.com Eating small, regular meals can stabilize blood glucose levels, and avoiding sugary foods can prevent blood glucose levels from rising. 16

17 To know the importance of regulating our bodies.
How do you know if there is sugar in urine? Add 10cm2 of urine to the boiling tube. Add the same amount of Benedict’s solution, shaking gently and put into the boiling water. Leave. If the solution changes from blue-green to brick red sugar is present. Put the samples in order of how much sugar is in it. Letter A B C D Colour before Colour after Order

18 To know the importance of regulating our bodies.
Success criteria- State what is meant by homeostasis. Identify what causes blood sugar levels to change. Explain how the hormones insulin and glucagon control blood sugar levels. Explain the symptoms and treatment of diabetes. Carry out an experiment to compare samples of urine. Reflective learners

19 To know the importance of regulating our bodies.
Write a letter to the patient informing them of your test results. Provide them with information about diabetes and the kinds of symptoms they may experience if they have diabetes. Success criteria-

20 To know the importance of regulating our bodies.
Write a letter to the patient informing them of your test results. Provide them with information about diabetes and the kinds of symptoms they may experience if they have diabetes. Dear Patient ___ I am writing with the results of your urine test. We found… This means that… Diabetes is… It can be caused by… It can be treated by…


Download ppt "To know the importance of regulating our bodies."

Similar presentations


Ads by Google