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The bones of the top of the head are fastened together by what are called sutures which are locked together by little teeth of bone that shoot by each other, as shown in the figure. <em>b</em> is the suture at the top of the head between the two parietal bones; <em>a a</em> is that between the two parietal bones and the frontal bone in front; and <em>c c </em> is that between the parietal bones and the bone at the back part of the cranium. These bones are not completely formed in the newborn infant.

Cranial Sutures

The bones of the top of the head are fastened together by what are called sutures which are locked together…

Sutures of the skull. Labels: a,a, the coronal suture, from the Latin corona, crown, so called from its situation on that part of the head, upon which the ancients placed the laurel, or olive crown, given to the victors in their games. It connects the frontal to the parietal bones; b, the sagittal suture, from a Latin word, signifying arrow, from its straight course. It runs from the middle of the frontal to the angle of the occipital bone, connecting the two parietals; c, the lambdoidal suture, extending from the sagittal suture down to the base of the brain on each side; e,e, the scaly overlapping of the temporal upon the parietal bones; hence called squamous suture.

Skull Sutures

Sutures of the skull. Labels: a,a, the coronal suture, from the Latin corona, crown, so called from…