A Level Biology Practice Exam

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What role do arteries play in the circulatory system?

  1. They carry blood toward the heart

  2. They distribute nutrients

  3. They carry blood away from the heart

  4. They filter waste from the blood

The correct answer is: They carry blood away from the heart

Arteries are vital components of the circulatory system, primarily responsible for carrying blood away from the heart. This blood is typically oxygenated, except for the pulmonary arteries which transport deoxygenated blood to the lungs for oxygenation. The structure of arteries, with their thick, elastic walls, supports high-pressure blood flow and allows them to distribute oxygen and nutrients to various tissues and organs throughout the body. Their role is crucial in maintaining the efficient distribution of resources required for cellular functions.

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