Cambridge IGCSE Biology (0610) - IGCSE Biology - Circulatory systems (9.1)

🎓 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 9 - Transport in animals Topic 9.1 - Circulatory systems 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 0:25 Circulatory system 1:04 Single circulation (extended) 1:57 Double circulation (extended) 2:20 Advantages of a double circulation (extended) Core content: - Describe the circulatory system as a system of blood vessels with a pump and valves to ensure one-way flow of blood. Extended content: - Describe the single circulation of a fish. - Describe the double circulation of a mammal. - Explain the advantages of a double circulation. Context: - In our next lesson we'll cover the structures of the heart, including the coronary arteries, atria, ventricles, septum, atrioventricular and semilunar valves, vena cava, pulmonary artery, pulmonary vein, aorta and muscular walls (myocardium). - In topic 9.3 we'll move on to look at the structures and functions of the blood vessels (arteries, capillaries and veins), including the width of lumen, thickness of walls, and the presence of pocket valves in the veins. - Finally, in topic 9.4 we'll cover the blood. You'll learn about the four components of blood (plasma, platelets, white blood cells and red blood cells), the process of clotting and the functions of lymphocytes and phagocytes.