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Veins (/ veɪn /) are blood vessels in the circulatory system of humans and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are those of the pulmonary and fetal circulations which carry oxygenated blood to the heart.
13 wrz 2024 · Veins are vessels that bring blood from other parts of the body to the heart. The low pressure venous system needs the contraction of muscles to return the blood to the heart. There are four major types of veins. Examples include pulmonary and systemic veins as well as superficial and deep veins.
18 paź 2024 · vein, in human physiology, any of the vessels that, with four exceptions, carry oxygen-depleted blood to the right upper chamber (atrium) of the heart. The four exceptions—the pulmonary veins—transport oxygenated blood from the lungs to the left upper chamber of the heart.
3 sie 2023 · Learn about the veins, the blood vessels that carry deoxygenated blood back to the heart. Find out their structure, types, functions, and common diseases with examples and diagrams.
14 kwi 2018 · Your venous system is a network of veins that carry blood back to your heart from other organs. We’ll explain the basic structure of a vein before diving into different types of veins and their...
19 cze 2022 · Veins are blood vessels located throughout your body that collect oxygen-poor blood and return it to your heart. Veins are part of your circulatory system.
Definition. Veins are blood vessels that carry deoxygenated blood back to the heart, playing a crucial role in the circulatory system. Unlike arteries, which transport oxygen-rich blood away from the heart, veins have thinner walls and often contain valves to prevent the backflow of blood as it returns to the heart against gravity.
