<prompt> The suboccipital triangle is bounded superolaterally by:Rectus capitis posterior major muscleRectus capitis posterior minor muscleSuperior oblique muscleInferior oblique muscle  <response>: Ref: BDC -194BoundariesSuperomedially: Rectus capitis posterior major muscle supplemented by the rectuscapitis posterior minor.Superolaterally: Superior oblique muscle.Inferiorly: Inferior oblique muscle.RoofMedially: Dense fibrous tissue covered by the semispinalis capitis.Laterally: Longissimus capitis and occasionally the splenius capitis.Floor1. Posterior arch of atlas.2. Posterior atlanto-occipital membraneContents1. Third part of vertebral artery.2. Dorsal ramus of nerve C1 suboccipital nerve.3. Suboccipital plexus of veins. 