SUBOCCIPITAL TRIANGLE
Norma occipitalis
Atlas
Axis
Muscles of the Back of NeckArranged in 4 layers (superficial to deep):First layerTrapezius
Second layerSplenius capitis
Third layerSemispinalis capitisLongissimus capitis12
Fourth layer4 musclesRectus capitis posterior majorRectus capitis posterior minorObliquus capitis superiorObliquus capitis inferior
Also called asSuboccipital muscles
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Suboccipital RegionBoundaries
Suboccipital TriangleBoundaries
RoofIII layer of muscles
FloorPosterior atlanto-occipital membranePosterior arch of Atlas
ContentsIII part of Vertebral arteryPosterior ramus of C1 nerveSuboccipital venous plexus
Contents
Vertebral Artery
C1 NerveSuboccipital nerveNo cutaneous branch
Suboccipital venous plexusOccipital vein , Internal vertebral venous plexus , condylar emissary vein and muscular veins
Suboccipital venous plexus
Vertebral veins
Greater occipital nerveThickest cutaneous nerve
Occipital artery
Applied AnatomyNeck rigidityCisternal PunctureSurgical approach for Posterior cranial fossa