Patient Care Technician (PCT) AAH Practice Exam

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What is the term for a blood vessel that carries blood away from the heart?

Artery
Vein
Capillary
Venule

The correct answer is: Artery

The correct term for a blood vessel that carries blood away from the heart is "artery." Arteries play a crucial role in the circulatory system by transporting oxygen-rich blood from the heart to various tissues and organs throughout the body. They have thick, elastic walls that can withstand the high pressure of blood being pumped directly from the heart, allowing for efficient distribution of oxygen and nutrients. In contrast, veins, capillaries, and venules serve different purposes in the circulatory system. Veins carry deoxygenated blood back to the heart. Capillaries are tiny blood vessels that facilitate the exchange of oxygen, carbon dioxide, and other substances between the blood and the body's cells. Venules are small vessels that collect blood from capillaries and take it to veins. Understanding these distinctions is essential for grasping how blood circulates throughout the body.