Splenius Capitis

Splenius Capitis The structure indicated is the splenius capitis muscle. The splenius capitis muscle is one of 8 muscles in the posterior triangle of the neck. The posterior triangle of the neck is bounded as follows: Anteriorly: posterior border of sternocleidomastoid Posteriorly: anterior border of trapezius Apex: Occipital bone between attachment sites of trapezius and sternocleidmastoid Base: middle third of clavicle Origin: Lower half of ligamentum nuchae and spinous processes of C7-T4 Insertion: Mastoid process, and part of skull inferior to lateral superior nuchal line. Action: Contraction together – extension of the neck. Contraction individually – Lateral flexion of neck …

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