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Bregma

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  1. Coronal Suture
  2. Sagittal Suture
  3. Lambdoid Suture
(Lambda also visible at the intersection of the lambdoid suture by the sagittal suture.)"
Bregma
Superior view of the calvarium, bregma located at the intersection of the coronal and sagittal sutures.
  1. Coronal Suture
  2. Sagittal Suture
  3. Lambdoid Suture

(Lambda also visible at the intersection of the lambdoid suture by the sagittal suture.)

Latin '
Gray's subject #32 135
System
MeSH [1]
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The bregma is the anatomical point on the skull at which the coronal suture is intersected perpendicularly by the sagittal suture.

LocationEdit

The bregma is located at the intersection of the coronal suture and the sagittal suture on the superior middle portion of the calvaria. It is the point where the frontal bone and parietal bones meet.

DevelopmentEdit

The bregma is known as the anterior fontanelle during infancy. The anterior fontanelle is membranous and closes within 4–26 months of life.

Clinical SignificanceEdit

In the congenital disorder cleidocranial dysostosis, the anterior fontanelle never closes to form the bregma.

The bregma is often used as a reference point for stereotactic surgery of the brain.

Also, examination of an infant includes palpating the anterior fontanelle. A sunken fontanelle indicates dehydration, whereas a very tense or bulging anterior fontanelle indicates raised intracranial pressure.

EtymologyEdit

Bregma comes from the Greek bregma, meaning top of the head. [1]

ReferencesEdit

  1. Liddell & Scott, Greek-English Lexicon

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

External linksEdit

Template:Sutures

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