How the Heart Starts Beating

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

Tachycardia - Symptoms and causes - Mayo Clinic

6 Ways Your Heart Can Get Out of Rhythm

Heart Starts to Beat

Heart Transplant Johns Hopkins Medicine

Obstetrics & Gynaecology Care Centre - Growing a baby is one of the most amazing feats! 👶Did you know that in just 18 days after conception, the baby's heart starts beating. 👶The

Heart Palpitations: Symptoms, Causes & Treatment

When our hearts first start to beat - BHF

How a healthy heart works, Heart and Stroke Foundation

Normal Fetal Heart Rate: Is Your Baby on Track? - Mama Natural