How much time does it take for blood to reach whole body?i.e. up to the toe?
The average size adult has 5-7 liters (L) of intravascular blood volume. Thinking about two terms will help to answer this question, those are stroke volume and cardiac output.
Stroke volume is the amount of blood emptied into the aorta from the left ventricle of the heart with each heartbeat. The aorta is the large artery that blood enters when it leaves the heart. From the aorta, blood is transported to the rest of the body. This amount of blood is called the stroke volume. Say for example, the heart pumps 70 ml of blood into the aorta with each contraction of the heart and the heart is beating 70 times per minute. In this example, 70 x 70 = 4,900. This amount, 4,900 ml of blood will enter the aorta every minute. This number is called the cardiac output (the amount of blood pumped from the heart every minute). Think of this, the average adult has 5-7 L of blood (some books say 4-6)., the numbers above, 70x70=4,900. In other words, in this example, almost 5 L of blood leave the heart every minute!!! It takes about one minute for the blood to reach all distant areas of the body, using these figures.