Floor Of Occipital Triangle

Prevertebral fascia covering the floor of the posterior triangle.

Floor of occipital triangle. The roof of the triangle is from superficial to deep skin superficial and deep fascia. Posterior atlanto occiptal membrane and posterior arch of the c1 vertebrae atlas cutaneous innervation over the triangle. Floor roof of the suboccipital triangle. Greater occipital nerve c2 dorsal ramus upper back of the skull.

Anterior formed by the posterior atlantooccipital membrane and posterior arch of the atlas 1. Suboccipital muscles and contents of the suboccipital triangle. Floor posterior arch of atlas and posterior atlantooccipital membrane ligament. The occipital triangle the larger division of the posterior triangle is bounded in front by the sternocleidomastoideus.

The roof is located superficially i e. Posterior and is formed by the semispinalis capitis muscle and a dense layer of adipose tissue 1. The semispinalis capitis occasionally splenius capitis levator scapulae and middle scalene and posterior muscles line the floor of the occipital triangle in that craniocaudal order. Below by the omohyoideus.

Lesser occipital nerve cervical plexus lateral part of the back of the skull. Behind by the trapezius. This ligament is broad and extends from the posterior margin of the foramen magnum to the posterior arch of atlas. It is covered by the skin the superficial and deep fasciæ and by the platysma below.