Asterion (anatomy)

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Asterion (anatomy)
Side view of head, showing surface relations of bones. (Asterion visible at center right.)
Gray's subject #46 183
Dorlands/Elsevier a_67/12164991
For other uses, see Asterion (disambiguation)

In human anatomy, the asterion is a visible, so-called craniometric, point on the exposed skull, just behind the ear, where three cranial sutures meet: the lambdoid, parieto-mastoid, and occipito-mastoid sutures.

Neurosurgeons use this point to orientate themselves, in order to plan safe entry into the skull for some operations.

Some surgeons call it the "Mercedes point", for its resemblance to the Mercedes-Benz logo.

Cranial sutures, Fontanelles, and related regions
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cranial sutures: Coronal | Lambdoid | Occipitomastoid | Parietomastoid | Sphenofrontal | Sphenoparietal | Sphenosquamosal | Sphenozygomatic |Squamosal | Zygomaticotemporal | Zygomaticofrontal | Frontal/Metopic | Sagittal | Frontoethmoidal | Petrosquamous | Sphenoethmoidal | Sphenopetrosal

fontanelles: Anterior fontanelle | Posterior fontanelle

Asterion | Nasion | Pterion | Dacryon | Inferior orbital fissure | Foramen lacerum | Jugular foramen