Mondo Knows Facts
The neural tube seals during the fourth week
The flat neural plate folds into a closed tube that becomes brain and spinal cord Early in pregnancy a sheet of ectoderm thickens into a plate and its edges rise and meet along the midline. Closure begins in the middle and proceeds toward both ends. The upper end swells into the brain vesicles while the rest becomes the spinal cord. It sits in Mondo's human body collection, one of 200 facts that each trace back to the reference below.
Where this comes from
Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.
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🫀 Human Bodyfact 181 of 200
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Tags: embryo, development, nervous-system
The neural tube seals during the fourth week: the short answers
- Where does this come from, and can I check it?
- The flat neural plate folds into a closed tube that becomes brain and spinal cord. The figure is taken from CDC, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
- Is this really a human body fact?
- Yes. It sits on the Human Body shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
- What else can I read about it?
- The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.