Presentation on theme: "课标人教实验版 高二 Module 5 Unit 5. Reading What things at home can be dangerous? electrical equipment electric wires poisons knives hot water glass Brainstorming."— Presentation transcript:
What can skin do for our body ? ______________________________ _______________________ ____________________________ _________________________ 1.Protect you against diseases, poisons and the sun’s harmful rays. 2.Keep you warm or cool. 3.Prevent you from losing water. 4.Give you sense of touch.
You can get burnt by : ___________ __________ _______________________ hot liquids steam fire radiation the sun electricity and chemicals
Types of burn How many types of burns are there? What are they? 1.First degree burns. 2. Second degree burns 3.Third degree burns
Answer the questions 1.Why should you put cold water on a burn? 2. Why doesn’t a third degree burn hurt? The cold water stops the burning The cold water stops the burning process, stops the pain and prevents or process, stops the pain and prevents or reduces swelling. reduces swelling. Because the nerves are damaged. If there are no nerves, there is no pain.
3. Why do you think clothes and jewellery near burns should be removed? 4. If someone has a third degree burn, why might you see tissue? Because bacteria from the clothes and Because bacteria from the clothes and jewellery could infect the burns. jewellery could infect the burns. Because all layers of the skin have Because all layers of the skin have been burnt showing the tissue underneath. been burnt showing the tissue underneath.
Label these pictures with first degree burn, second degree burn and third degree burn. second degree first degreethird degree Tissue under them often can be seen. Characteristics: Mildly swollen Extremel y painful
补充 sense of touch sense of sight sense of hearing sense of taste sense of smell sense of humor sense of beauty sense of urgency 触觉 sense 视觉 听觉 味觉 嗅觉 幽默感 美感 紧迫感