Which suture forms the boundary between the Frontal bone and the Parietal bone on the skull's top?

Which suture forms the boundary between the Frontal bone and the Parietal bone on the skull's top?

• A. Coronal suture
• B. Sagittal suture
• C. Squamous suture
• D. Lambdoid suture

Answer: (A)

The boundary between the frontal bone and the parietal bones across the top of the skull is formed by the coronal suture. It runs horizontally across the crown, separating the forehead from the top of the head, and its name reflects this crown-like position. For context, the sagittal suture sits along the midline between the two parietal bones, the squamous sutures connect the parietal bones to the temporal bones on each side, and the lambdoid suture joins the parietal bones to the occipital bone at the back.

The boundary between the frontal bone and the parietal bones across the top of the skull is formed by the coronal suture. It runs horizontally across the crown, separating the forehead from the top of the head, and its name reflects this crown-like position.

For context, the sagittal suture sits along the midline between the two parietal bones, the squamous sutures connect the parietal bones to the temporal bones on each side, and the lambdoid suture joins the parietal bones to the occipital bone at the back.