Test: Human Anatomy and Physiology

1.

What in one defining characteristic of veins?

They carry deoxygenated blood from the heart to the capillaries

They carry deoxygenated blood from capillaries to the heart

They carry blood from capillaries to the heart

They carry blood from the heart to the capillaries

They have a muscular layer allowing them to expand and contract, thus regulating blood pressure

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