Which of the following are considered the four sutures of the skull?

The four sutures of the skull that are most commonly identified in human anatomy are the coronal, sagittal, lambdoid, and frontal sutures. The coronal suture is situated between the frontal bone and the two parietal bones, playing a role in defining the anterior aspect of the skull. The sagittal suture runs along the midline, connecting the left and right parietal bones. The lambdoid suture is located at the posterior aspect, between the parietal bones and the occipital bone. The frontal suture, while it may be less frequently discussed in the context of adult anatomy as it tends to fuse to form the frontal bone, is recognized as a significant suture in fetal and young skulls.

This combination accurately depicts the primary sutures that contribute to the typical structure of the adult skull. The other options list combinations that do not accurately reflect the well-established anatomy of cranial sutures. Therefore, the selection that includes all four recognized sutures aligns correctly with anatomical terminology and the standard understanding of the cranial structure.