Other contributors have said "When duos the heart start beating?" is the same question as "When does heart of fetus start beating?". If you believe that these are not asking the same thing and should be answered differently, click here.
When does heart of fetus start beating?
In:
Heart
[Edit categories]
Answer:
Somewhere around the 30th day after fertilisation, the primitive cells of the heart start a rhythmic contraction that becomes the heartbeat.
For more information I suggest you search for Carnegie Stages, and here's a link to the earliest point at which cells in the heart beat:
http://www.embryology.ch/a15v
For more information I suggest you search for Carnegie Stages, and here's a link to the earliest point at which cells in the heart beat:
http://www.embryology.ch/a15v
Related answers: - When does the heart start beating in a fetus? 22 Days. 23 days after conception according to my Anatomy and Physiology Honors professor who is...
- What age does the heart of a fetus start beating? Heart is one of the earliest organs to develop. The heartbeat can be detected by ultrasound as...
- When does a baby's heart start beating? 7 days after conception
- When can you see a fetus heart beating in a sonogram? Around the 6 week point of pregnancy.
Can you answer these? 