Embryology & Early Development

Mesenchyme

Mesenchyme is loosely organized embryonic connective tissue that gives rise to bone, including parts of the skull.

In short: Mesenchyme

  • The skull bones develop from mesenchyme.
  • It is an early connective tissue.
  • Its development relates to skull formation.
  • It contributes to the bones surrounding the brain.

What it is

It is loosely organized embryonic connective tissue that gives rise to bone and other supporting structures, including parts of the skull. It is a versatile precursor tissue.

Understanding Mesenchyme

Because the skull bones develop from mesenchyme, this tissue's development is part of how the cranium forms around the brain — relevant to the bony defects seen in encephalocele. Normal formation of the skull from mesenchyme is one of the processes that, when disrupted, can contribute to a bony opening.

Why it matters

Understanding mesenchyme helps families see how the skull bones form during development, providing context for the bony defect at the heart of an encephalocele.

Common questions

What does mesenchyme become?

Bone, including parts of the skull.

Why is it relevant?

The skull bones develop from it.

What kind of tissue is it?

Early connective tissue.

Bottom line

Mesenchyme is embryonic tissue that forms bone, including the skull around the brain.

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