Labels:book | earth | ootid | orange | sky | tree OCR: INSIDE AN ARTERY NARTERY is a muscular elastic vessel with thick walls (the image shows one in cross section) Arteries carry oxygen- -rich blood away from your heart. The largest are those leaving the heart; they are wide as a garden hose and very elastic (able to withstand the rush of blood from each heartl tbeat). They branch into smaller, more muscular, and less elastic arteries, which deliver blood to the body The smallest are the arterioles, which control blood flow in the body tissues. Wall of artery Bore of artery ieaving heartbeat
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