How many neurons are in the human brain?
The human brain contains about 86 billion neurons.
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- Why do premature babies need surfactant?
“Premature babies may need surfactant because their lungs don't yet make enough of it.”
Reference: Cleveland Clinic
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Why is the left lung smaller?
The left lung is smaller than the right to make room for the heart.
When to not have grapefruit
If you've had an organ transplant, it is best to avoid eating grapefruit or drinking grapefruit juice (it interferes with the anti-rejection drugs in your blood).