Your heart began beating early in development, before it had fully formed into the four-chambered organ you know today.Its first contractions started while the rest of your body was still taking shape. One of the most important rhythms in your life began before your heart was fully built.#DeepStructure #HumanDevelopment #Embryology #HeartDevelopment #HumanBiology
In Album: Judy Gilford's Timeline Photos
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