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Venules merge together to form _____. arteries veins the heart capillaries

User JCQian
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Answer: veins

Explanation: The capillaries, where the gaseous exchange occurs, merge into venules and these converge to form larger and larger veins until the blood reaches either the superior vena cava or inferior vena cava, which drain into the right atrium.

User Alvaro Inckot
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Answer:

Veins

Step-by-step explanation:

Within the body, there are five primary classifications of blood vessels: arteries, veins, arterioles, venules, and capillaries -- each of these inevitably flows into another in a perfect "circle" that keeps blood circulating in order to perfuse oxygen to the many tissues present throughout the body.

Arteries usually with oxygen-rich blood pump this blood away from the heart and into the smaller arterioles. Arterioles become the one-cell thick capillaries where gas exchange occurs (oxygen hops off of the hemoglobin protein, carbon dioxide hops on). These capillaries then become venules now circulating oxygen-deficient blood that needs to return to the heart. The venules join together to form veins which then pump feed larger volumes of this oxygen-poor blood back to the heart and lungs to restart the process.

User Pavot
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