How many neurons are in the human brain?
The human brain contains about 86 billion neurons.
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- Can the liver regrow?
“The liver can regenerate. When part of it is donated, both the donor's liver and the transplanted portion can grow back to nearly full size.”
Reference: Johns Hopkins Medicine
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What is the largest internal organ?
The liver is the largest internal organ, weighing about three pounds.
Can sea stars regrow arms?
Sea stars can regrow lost arms, and some can regrow a whole body from a single arm.