Skip Navigation
The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
Donate Now Get Free Videos

Movie Theater

The Heart in Action


4 weeks, 4 days

From The Biology of Prenatal Development.Buy Now

Script: The heart typically beats about 113 times per minute.

Note how the heart changes color as blood enters and leaves its chambers with each beat.

The heart will beat approximately 54 million times before birth and over 3.2 billion times over the course of an 80-year lifespan.

All ages referenced to fertilization, not last menstrual period.
See Snapshots   |   Log in to create a playlist
Body Cavity Formation
Body Cavity Formation
Amniotic Fluid
Amniotic Fluid
The Heart in Action
The Heart in Action
The Limbs Bud
The Limbs Bud
Transparent Skin
Transparent Skin
Cerebral Hemispheres
Cerebral Hemispheres
Tell your story. Create your own pregnancy calendar.
When does health begin? Find out now.


Add a Comment

Your Name: Log In 3rd-party login: Facebook     Google     Yahoo

Comment: