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This tutorial covers the definition of the term 'vein' and gives an explanation about the basics of our venous system. Read more about the circulatory system in our free article: https://khub.me/mweqt Oh, are you struggling with learning anatomy? We created the ★ Ultimate Anatomy Study Guide ★ to help you kick some gluteus maximus in any topic. Completely free. Download yours today: https://khub.me/dpyhc There are three types of vessels that transport blood and nutrients through the body - the arteries, veins and capillaries. Veins carry blood away from the tissues and towards the heart. They have thin walls, a larger lumen than the arteries and usually have valves to prevent a retrograde direction of transport. Blood that returns to the heart via the veins comes from the capillaries, where the arterioles and venules meet and the exchange of gases, nutrients and waste products takes place. In this overview video we will take a look at the definition, structure and function of the veins: 0:08 veins, arteries and capillaries definition 0:37 vein function and features 0:57 venous drainage from capillaries Want to test your knowledge on the histological structure of veins and arteries? Take this quiz: https://khub.me/rb3jz Read more on the histology of neurons in our free article and become a pro at the beautiful anatomy of the nervous tissue: https://khub.me/merc0 For more engaging video tutorials, interactive quizzes, articles and an atlas of Human anatomy and histology, go to https://khub.me/ouyat