Definition: a serrated, shelflike extension of the spinal pia mater projecting in a frontal plane from either side of the cervical and thoracic spinal cord; its approximately 21 pointed processes fuse laterally with the arachnoid and dura mater midway between the exits of the roots of adjacent spinal nerves, with the highest process attaching immediately superior to foramen magnum.
Synonym(s): ligamentum denticulatumTA
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Examples: glitazone, GI cocktail, etc.