When does a Fetus Heart Start Beating?

Just four weeks after conception, a human fetus' heart wiil begin to pump blood and beat. For more on developmental stages of the human fetus, go to:http://www.mayoclinic.com/health/prenatal-care/PR00112 You can find more information here: http://www.mayoclinic.com/health/prenatal-care/PR00112
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