Nuchal Lines
At the point where the two superior nuchal line of the right and left sides meet at the median line, there is a small eminence. This small eminence is termed as External occipital protuberance.
The external occipital protuberance is a raised region on the midline of the occipital bone where the posterior wall meets the base of the skull. The ligamentum nuchae, which connects the cervical vertebrae to the brain, is at its highest point.
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