Question #678
Considering sutures of the skull, which of the following statements is correct?
Sutures of the adult skull are a type of fibrous joint known as synarthroses.
The occipitomastoid, parietomastoid and lambdoid sutures all meet at the asterion.
The inion corresponds with the external occipital protuberance and is not associated with any sutures.
The lambda lies posteriorly at the junction of the sagittal and lambdoid sutures.
The bregma lies anteriorly at the junction of the sagittal and coronal sutures.
The pterion is form at the junction of the temporal, sphenoidal, parietal and frontal bones. It is easily identified as the ‘H’ shape made by the sutures on the lateral aspect of the skull. The central suture is the sphenoparietal suture.
The frontal bone forms from two parts that fuse together. It allows movement of the frontal bones during delivery and early childhood development. The suture has usually disappeared by age 6, however, if it persists it is known as a metopic suture.
