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🎓 IGCSE Biology - The Complete Course: https://www.tes.com/teaching-resource/resource-12989155 IGCSE Chemistry - The Complete Course: 🎓 Complete Teaching Resource (including past exam questions and mark schemes organised by chapter): https://www.tes.com/teaching-resource/resource-13280954 🎓 Student resource (PDF only): https://www.tes.com/teaching-resource/resource-13245244 🎓 All the videos (the complete library on Patreon): https://www.patreon.com/igbiocomplete ☕️ Buy me a coffee - https://www.buymeacoffee.com/ArthurJohnParker Cambridge IGCSE Biology (0610/0970) Chapter 7 - Human nutrition Topic 7.3 - Physical digestion For exams from 2025 (core and extended) As always this video follows the Cambridge syllabus exactly and contains absolutely everything you need to know for your final exam! My other channels: @igpecomplete - Cambridge IGCSE PE @ocrpecomplete - OCR GCSE PE Timestamps: 0:00 Contents 0:28 Physical digestion 1:05 Types of human teeth 1:51 Tooth structure 2:37 Stomach 3:02 Bile (extended) Core content: - Describe physical digestion as the breakdown of food into smaller pieces without chemical change to the food molecules. - State that physical digestion increases the surface area of food for the action of enzymes in chemical digestion. - Identify in diagrams and images the types of human teeth: incisors, canines, premolars and molars. - Describe the structure of human teeth, limited to: enamel, dentine, pulp, nerves, blood vessels and cement, and understand that teeth are embedded in bone and the gums. - Describe the functions of the types of human teeth in physical digestion of food. - Describe the function of the stomach in physical digestion. Extended content: - Outline the role of bile in emulsifying fats and oils to increase the surface area for chemical digestion.
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