superior nuchal line การใช้

• The lower is termed the superior nuchal line.
• Several muscles are attached to the outer surface of the squamous part, thus the superior nuchal line gives origin to the minor.
• Superiorly, it attaches to the lower border of mandible, to the mastoid process, superior nuchal line and the external occipital protuberance.
• The fibers of the muscle are directed upward and laterally and are inserted, under cover of the sternocleidomastoideus, into the mastoid process of the temporal bone, and into the rough surface on the occipital bone just below the lateral third of the superior nuchal line.
• The two heads are separated from one another at their origins by a triangular interval ( " supraclavicular fossa " ) but gradually blend, below the middle of the neck, into a thick, rounded muscle which is inserted, by a strong tendon, into the lateral surface of the mastoid process, from its apex to its superior border, and by a thin aponeurosis into the lateral half of the superior nuchal line of the occipital bone.