You know that your heart pumps blood, but how much blood it pumps every minute?

Question

every average heart pumps equal amount of blood every minute, Don't get confused!

Answer 1

One heartbeat is typically around 50 ml - more if you're exercising, or have extra blood return for some reason.

Take that times a typical heart rate of, we'll say, 80 beats per minute:

50 * 80 = 4000 ml or 4 liters.

There are a lot of variables that can affect this, but it's a ballpark figure anyway.

Answer 2

A normal heart pumps about 4.5 litres of blood every minute, EVERY single minute of your life!
But did you also know that the poor heart (Your pump) has to pump harder when you become overweight?
Each additional Kilo beyond your 'ideal weight' means 9 MILES of extra arteries and veins!!
Isn't it amazing, how much we overload the poor fellow??

Answer 3

The problem with this question is that it assumes 100% efficiency. Cardiologists use ultrasound to measure the "ejection fraction", or the percentage of the the volume of blood in your heart which is pumped out with each contraction. Heart attacks kill heart muscle, denying it the ability to flex, so a low ejection fraction signifies a lower supply of blood, inhibiting your activites. Your question assumes 100% ejection fraction, so the answere of 384 kg would be correct.

Answer 4

well its is different with every heart
it depends upon various factors
you need to do the following things to know the exact amount of the blood pumped by heart

Materials

Plastic cups
Graduated cylinders
Calculator
Water
Meter stick or measuring tape
Scale
Nomogram

Procedure

The first thing you will need to know to figure your cardiac output (how much blood your heart pumps in a minute) is the surface area of your body. To find it, you need to know your height and weight.

Using the measuring tape or meter stick, find your height in centimeters. Record your height below.

Height = ____________ centimeters

Using the scale, find your weight. Your weight can be recorded in pounds or kilograms. Record your weight below. Circle the units you used.

Weight = _____________ pounds or kilograms

On the nomogram, find your weight in the right column and your height in the left column. Use a straightedge to connect the two points. The point where the straightedge crosses the center column is your body’s surface area in square meters. Record your body’s surface area below.

My body’s surface area = ________________________ square meters

To get the amount of blood your heart pumps per minute, multiply your body’s surface area by 2.75. This number is the average liters per meter squared per minute for an average 10-13 year old at rest. The result of this calculation is the amount of blood, in liters, that your heart pumps per minute. Record your answer below.


Amount of blood pumped in 1 minute = ___________________ liters


How does this number compare to a 2-liter bottle of soda?


Now, to determine how much blood your heart pumps in each beat, we must know how many times your heart beats per minute. To do this, find your pulse on your wrist or neck. Count the number of beats you feel in a period of 15 seconds. (You may want your partner to keep track of time for you.) Multiply the number of beats you feel in 15 seconds by 4 to get the number of times your heart beats in 1 minute. Record the information below.


Number of beats in 1 minute = ________


Since you know how much blood your heart beats in 1 minute and you know how many times your heart beats in 1 minute, you can determine how much blood is pumped in each beat. Divide the amount pumped per minute by the number of beats per minute to get the amount pumped per beat. Record your answer below.


Amount of blood pumped per heartbeat = _____________ liters


To get a number that is easier to work with, multiply the number from step 7 by 1,000 to get the amount pumped per heartbeat in milliliters.


Amount of blood pumped per heartbeat = __________ milliliters

Using the graduated cylinder, carefully measure out the number of milliliters your heart pumps per heartbeat. Pour this amount into a plastic cup. Are you surprised by the amount? Is it more or less than you thought it would be? Answer these questions in the space below.

Compare your heartbeat volume to your classmates. Who has the largest heartbeat volume? Who has the smallest? Are you surprised? Does anyone else have the same heartbeat volume that you do? Answer these questions in the space below.

Create a bar graph to show your groups heartbeat volumes.