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pulse

pulse

/puhls/

Noun

When the heart contracts, a “wave” or bolus of blood is sent out of the left ventricle and into the arterial system. As that bolus passes through a specific area of an artery, it momentarily expands to accommodate the wave. The artery then “snaps” back into its original size, propelling the wave into the next section, where the process repeats itself. You can feel this wave of blood by slightly compressing an artery in several places in the body against a hard surface like a bone.