A full-term pregnancy is typically 280 days, but the embryo's heart begins beating just 22 days after conception.
Fact #4149
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More Human Body Facts
Humans shed about 30,000 to 40,000 dead skin cells every hour.
Fact #3628 · Human Body
The human brain contains roughly 86 billion neurons.
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The human nose can distinguish over one trillion different scents.
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The brain consumes a significant portion of the body's energy.
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Your brain fills in your blind spot so you never notice it exists.
Fact #2246 · Human Body
The left lung is slightly smaller than the right to make room for the heart.
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Your brain enables existence.
Fact #2425 · Human Body
The human brain is optimized for pattern recognition.
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