SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Veins
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Arteries
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Capillaries
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Lymph ducts
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Detailed explanation-1: -Two large veins that lead into the heart are the superior vena cava and inferior vena cava. (The terms superior and inferior don’t mean that one vein is better than the other, but that they’re located above and below the heart.)
Detailed explanation-2: -Arteries and veins (also called blood vessels) are tubes of muscle that your blood flows through. Arteries carry blood away from the heart to the rest of the body. Veins push blood back to your heart.
Detailed explanation-3: -Veins are blood vessels that carry oxygen-poor blood to your heart. Pulmonary veins are an exception because they carry oxygen-rich blood from your lungs to your heart. Veins in your legs fight gravity to push blood up toward your heart.