Examlex
Because of their inorganic nature, vitamins can be destroyed during storage and in cooking and must be handled with care.
Venule
Small blood vessels that allow deoxygenated blood to return from capillary beds to larger blood vessels called veins.
Arteries
Blood vessels that carry oxygen-rich blood away from the heart to the body.
Veins
Blood vessels that carry blood towards the heart, often containing valves to prevent backflow.
Valves
Structures within the heart and veins that maintain one-way blood flow, preventing backflow and ensuring efficient circulation.
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