Corpus: Calvaria
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Synonyms: skullcap, calva, calvaria
English:
Definition[Bearbeiten]
The term calvaria refers to the bony roof of the skull, which is made up of flat bones connected by sutures.
Evolution[Bearbeiten]
The cap bones of the cranial calvaria develop from the mesectoderm of the head (neural crest) through desmal ossification.
Anatomy[Bearbeiten]
With its ossa plana, the calvaria forms a protection for the brain located inside. It consists of parts of the following bones:
- Os frontale
- Os parietale
- Os occipitale
- temporal bone (pars squamosa)
The bones are connected to each other via sutures and include the two fontanelles in children:
- Sutura sagittalis
- Coronal sutura
- Sutura lambdoidea
The cranial calvaria consists of three layers:
- Lamina externa (tabula externa)
- Diploe (cancellous bone)
- Lamina interna (tabula interna)
The diploe is traversed by numerous diploevenes, which are connected to both intra- and extracranial veins.
Pathological note[Bearbeiten]
The skullcap of a foetus or a newborn is not yet ossified and is therefore deformable. Pressure exerted in utero or during birth can lead to congenital cranial vault impressions.