Subject: What causes the first heart beat ?
Date: Sun Jul 25 15:36:27 1999
Posted by Gerald Steede
Grade level: No grade entered.
School: None
City: Russellville State/Province: Arkansas
Country: United States
Area of science: Anatomy
ID: 932934987.An
Message:
When a fetus is developing, at what point does the heart start
and what causes it to start?
Re: What causes the first heart beat ?
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