Birdwatch Note Rating
2023-04-14 14:36:12 UTC - HELPFUL
Rated by Participant: 3CCD3C1C3ADECD9388A328B5DDDBFE554EA39E97328528D7042A96FBDA7F3B69
Participant Details
Original Note:
The embryonic heart begins beating by 22 days post-fertilization & actively pumps blood by the end of gestational week 4. https://www.karger.com/Article/Fulltext/501906 Video of beating heart at 4 weeks 4 days post-fertilization (6 weeks 4 days since last menstrual period). https://www.ehd.org/movies/21/The-Heart-in-Action
All Note Details