| massa lateralis atlantis | The thick lateral part of the atlas on each side that articulates above with the occipital condyle and below with the axis. Synonym: massa lateralis atlantis. (05 Mar 2000) |
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| tuberculum anterius atlantis | A conical protuberance on the anterior surface of the arch of the atlas. Synonym: tuberculum anterius atlantis. (05 Mar 2000) |
| tuberculum posterius atlantis | A protuberance of the posterior extremity of the arch of the atlas, a rudiment of the spinous process giving attachment to the musculus rectus capitis posterior minor muscle. Synonym: tuberculum posterius atlantis. (05 Mar 2000) |
| facies articularis inferior atlantis | One of two concave surfaces on the lateral masses of the atlas that articulate with corresponding surfaces on the axis. Synonym: facies articularis inferior atlantis, fovea articularis inferior atlantis, inferior articular pit of atlas. (05 Mar 2000) |
| facies articularis superior atlantis | One of two concave articular surfaces on the superior aspect of the lateral masses of the atlas that articulate with the occipital condyles. Synonym: facies articularis superior atlantis, fovea articularis superior atlantis, superior articular pit of atlas. (05 Mar 2000) |
| fasciculi longitudinales ligamenti cruciformis atlantis | <anatomy> Ligamentous slips forming the "upright" or vertical beam of the cruciform ligament. Synonym: fasciculi longitudinales ligamenti cruciformis atlantis. (05 Mar 2000) |
| fovea articularis inferior atlantis | One of two concave surfaces on the lateral masses of the atlas that articulate with corresponding surfaces on the axis. Synonym: facies articularis inferior atlantis, fovea articularis inferior atlantis, inferior articular pit of atlas. (05 Mar 2000) |
| fovea articularis superior atlantis | One of two concave articular surfaces on the superior aspect of the lateral masses of the atlas that articulate with the occipital condyles. Synonym: facies articularis superior atlantis, fovea articularis superior atlantis, superior articular pit of atlas. (05 Mar 2000) |
| fovea dentis atlantis | A circular facet on the posterior (inner) surface of the anterior arch of the atlas which articulates with the dens of the axis. Synonym: fovea dentis atlantis, pit of atlas for dens. (05 Mar 2000) |
| ligamentum cruciatum atlantis | The strong ligament that lies posterior to the dens of the axis holding it against the anterior arch of the atlas; it consists primarily of the transverse ligament of the atlas that forms the cross-bar of the cross and is most important functionally, and longitudinal bands of the cruciform ligament, forming the upright or vertical beams of the cross. Synonym: ligamentum cruciforme atlantis, crucial ligament, cruciate ligament of the atlas, ligamentum cruciatum atlantis. (05 Mar 2000) |
| ligamentum cruciforme atlantis | The strong ligament that lies posterior to the dens of the axis holding it against the anterior arch of the atlas; it consists primarily of the transverse ligament of the atlas that forms the cross-bar of the cross and is most important functionally, and longitudinal bands of the cruciform ligament, forming the upright or vertical beams of the cross. Synonym: ligamentum cruciforme atlantis, crucial ligament, cruciate ligament of the atlas, ligamentum cruciatum atlantis. (05 Mar 2000) |
| ligamentum transversum atlantis | Thick, strong, centrally flattened band spanning the vertebral foramen of the atlas as it extends from the medial aspect of one lateral mass to the other, passing dorsal to the dens with which it articulates; it forms the dorsal portion of the opening for the dens, tightly embracing its neck. It forms a part of the "cross-bar" of the cruciform ligament of the atlas. See: cruciform ligament of atlas. Synonym: ligamentum transversum atlantis, Lauth's ligament, transverse atlantal ligament. (05 Mar 2000) |
| musculus | <anatomy> A muscle. For histologic description, see muscle. Synonym: muscle. Origin: L. A little mouse, a muscle, fr. Mus (mur-), a mouse (05 Mar 2000) |
| musculus abductor digiti minimi manus | Origin, pisiform bone and pisohamate ligament; insertion, medial side of base of proximal phalanx of the little finger; action, abducts and flexes little finger; nerve supply, ulnar. Synonym: musculus abductor digiti minimi manus, abductor muscle of little finger, musculus abductor digiti quinti. (05 Mar 2000) |
| musculus abductor digiti minimi pedis | Origin, lateral and medial processes of calcanean tuberosity; insertion, lateral side of proximal phalanx of fifth toe; action, abducts and flexes little toe; nerve supply, lateral plantar nerve. Synonym: musculus abductor digiti minimi pedis, abductor muscle of little toe, musculus abductor digiti quinti. (05 Mar 2000) |