Playlist: Rarest Footage
The Heart in Action
#021, Movie 1 of 10
4 weeks, 4 days
The Heart in Action
4 weeks, 4 days
Blood Formation in Liver
6 weeks, 6 days
The Developmental Period
7 weeks, 4 days
Eyes and Eyelids
7 weeks, 4 days
Reflexive Movement
8 weeks
The Embryonic Period
8 weeks
4D Ultrasound
10 weeks
Nose and Lips
11 weeks
Taste Buds
3 months
Behavioral States
7 months, 2 weeks
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. | ||
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