suboccipital triangle

noun

Medical Definition of suboccipital triangle 

: a space of the suboccipital region on each side of the dorsal cervical region that is bounded superiorly and medially by a muscle arising by a tendon from a spinous process of the axis and inserting into the inferior nuchal line and the adjacent inferior region of the occipital bone, that is bounded superiorly and laterally by the obliquus capitis superior, and that is bounded inferiorly and laterally by the obliquus capitis inferior

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