How the Heart Starts Beating

Researchers discover that heart cells in developing zebrafish start beating suddenly and all at once

THE HEART. - ppt download

Why does shocking a stopped heart with electricity makes it start again and who decides which will start to beat by itself and which won't and be dead? - Quora

JCDD, Free Full-Text

Research uncovers exactly when our heart first starts to beat - BHF

Fetal heart development: When does the fetus develop a heart?

I agree : r/tumblr

When Your Baby's Heartbeat Starts and When You Can Hear It

Why is My Heart Beating so Fast?

The Very First Beat: How a Heart Starts To Pulse Video

Live Action - Did you know? At 21 days, a preborn baby has a heartbeat. At the end of the first trimester, the child has a face, fingers and toes, and a

Why Is My Heart Beating So Fast?