JACOPIN / SCIENCE PHOTO LIBRARY JACOPIN / SCIENCE PHOTO LIBRARY
DIGESTION, DRAWING The sugar cycle. Illustration of the cycle of sugar in a child's body. Sugar in ingested and then digested. Glucose and insulin are secreted by the pancreas and are sent into venous circulation, pass through the heart and into arterial circulation, and finally arrive in the muscle cells where the insulin enables the glucose to be absorbed providing the cells with energy.
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