Artery Structure
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
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An artery carries blood away from the heart through a thick, muscular, elastic wall built to withstand and smooth the pressure surges each heartbeat produces.
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An artery's elastic recoil between beats helps maintain forward flow while the heart briefly relaxes.
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"Artery" names a direction of flow, away from the heart — it does not specify what the blood contains.