Posterior Triangle of Neck
The posterior border of the sternocleidomastoid defines its posterior border. Perineal membrane posterior border of perineal membrane forms anterior. Triangles Of Neck Anatomy Of The Neck Anatomy Continuing Medical Education The suboccipital muscles act to rotate the head and extend the neckRectus capitis posterior major and Rectus capitis posterior minor attach the inferior nuchal line of the occiput to the C2 and C1 vertebrae respectivelyObliquus capitis superior also extends from the occiput to C1 while obliquus capitis inferior originates. . Obliquus capitis superior - above and laterally. Traversing the posterior triangle where it then disappears under the anterior surface of the trapezius to innervate this muscle. Laterally anterior border of the sternocleidomastoid. Investing fascia covers the roof of the triangle while visceral fascia covers the floorIt can be subdivided further. Superiorly inferior border of the m
