Arteries, veins and capillaries in 3D
Pick a vessel to read how its structure fits its job.
Learn circulation properly
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Questions students ask
Why do arteries have thick walls?
Blood leaves the heart at high pressure; thick muscular, elastic walls withstand it and smooth the flow.
Why do veins have valves?
The blood pressure in veins is low, so valves stop blood flowing backwards.
Free notes on circulation
- The Cardiovascular System: Blood Vessels and Circulation · i need to learn about the parts of the heat and also the cardiovascular system with how blood transfusion works and all the parts of the heart
- Introduction to Circulation · FSC Biology
- ความรู้พื้นฐานเกี่ยวกับระบบกล้ามเนื้อ · สรีรวิทยา
- Introduction to the Cardiovascular System and Heart Anatomy · i need to learn about the parts of the heat and also the cardiovascular system with how blood transfusion works and all the parts of the heart
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- Physiology of the Heart and Cardiac Cycle · i need to learn about the parts of the heat and also the cardiovascular system with how blood transfusion works and all the parts of the heart
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