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The heart is the central organ of the circulatory system, and pumps blood into the blood vessels which carry it to all the body parts. All these events occur with each heartbeat. The average heart rate in a normal person is 72 beats per minute, so one can imagine the speed at which blood flows through the body.
Historical Examples. 1  Vascular: relating to the blood-vessels or circulatory system. 2  These are successively injected into the circulatory system. 3  There is no circulatory system, nor are there any special organs of respiration. 4  A similar difference, quite on a par with this, exists in the circulatory system.