Pyramidal bone

pyramidal bone n.
See triquetrum bone.


Read Also:

  • Pyramidal cataract

    pyramidal cataract n. A cone-shaped anterior polar cataract.

  • Pyramidal decussation

    pyramidal decussation n. Crossing of the bundles of the pyramidal tracts at the lower border of the medulla oblongata. Also called motor decussation.

  • Pyramidal fracture

    pyramidal fracture n. A fracture of the midfacial bones, especially the upper jawbone, in which the principal fracture lines meet at a point above the nasal bones, forming a triangular section that is detached from the skull. Also called LeFort II fracture.

  • Pyramidal muscle

    pyramidal muscle n. A muscle with origin from the crest of the pubis, with insertion into the lower portion of the linea alba, with nerve supply from the last thoracic nerve, and whose action makes the linea alba tense.

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