This is a 16 week fetus that was naturally miscarried. Squeezing of the foetal skull shows how the bones in the foetus are soft and unfused.
These bones remain soft and unfused forming "FONTANELLES" to allow the foetus pass through the birth canal.
When the head squeezes through the tight birth canal, the skull bones overlap at the fontanelles to allow the baby's head come out.
After delivery, the bones return to their normal position.
The posterior fontanelles close within 2 or 3 months of birth while the anterior fontanelle closes at approx. 18 months.
These bones remain soft and unfused forming "FONTANELLES" to allow the foetus pass through the birth canal.
When the head squeezes through the tight birth canal, the skull bones overlap at the fontanelles to allow the baby's head come out.
After delivery, the bones return to their normal position.
The posterior fontanelles close within 2 or 3 months of birth while the anterior fontanelle closes at approx. 18 months.
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