Calvaria (skull)
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Calvaria (skull) | |
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skull | |
Identifiers | |
Latin | calvaria |
TA98 | A02.1.00.032 |
TA2 | 436 |
FMA | 52800 |
Anatomical terms of bone] |
The calvaria is the top part of the skull. It is the superior part of the neurocranium and covers the cranial cavity containing the brain. It forms the main component of the skull roof.
The calvaria is made up of the superior portions of the
In Latin, the word calvaria is used as a feminine noun with plural calvariae; however, many medical texts incorrectly list the word as calvarium, a neuter Latin noun with plural calvaria.[2]
Structure
The outer surface of the skull possesses a number of landmarks. The point at which the frontal bone and the two parietal bones meet is known as the bregma. The point at which the two parietal bones and the occipital bone meet is known as the lambda. Not only do these landmarks indicate the fontanelle in newborns, they also act as reference points in medicine and surgery.
The inner surface of the skull-cap is concave and presents depressions for the convolutions of the cerebrum, together with numerous furrows for the lodgement of branches of the meningeal vessels. Along the middle line is a longitudinal groove, narrow in front, where it commences at the frontal crest, but broader behind; it lodges the superior sagittal sinus, and its margins afford attachment to the falx cerebri. On either side of it are several depressions for the
It is crossed in front by the coronal suture and behind by the lambdoid suture, while the sagittal suture lies in the medial plane between the parietal bones.
Layers
Most bones of the calvaria consist of internal and external tables or layers of compact bone, separated by
Development
In the fetus, the formation of the calvaria involves a process known as intramembranous ossification.
In popular culture
In many translations of the
", a reference to this body part.References
- S2CID 38394369.
- ^ "calvaria", Wiktionary, the free dictionary, 2023-10-15, retrieved 2024-03-09
- ISBN 978-0-7817-7525-0.
- PMID 19425099.
Further reading
- Tubbs RS, Loukas M, Shoja MM, Apaydin N, Salter EG, Oakes WJ (April 2008) [20 Nov 2007]. "The intriguing history of the human calvaria: sinister and religious". Child's Nervous System. 24 (4). S2CID 895823.
External links
- Cross section image: skull/calv-inf—Plastination Laboratory at the Medical University of Vienna
- Cross section image: skull/calv-sup—Plastination Laboratory at the Medical University of Vienna
- Calvaria