. Quain's Elements of anatomy. passes ARTICULATIONS OF THE ATLAS, AXIS, AND OCCIPITAL BONE. 157 directly upwards from the summit of the odontoid process to the centre of theanterior margin of the foramen magnum. The central odontoid lirrament is developed around the notochord in the interval betweenthe basioccipital and first vertebral centrum, and may therefore be said to represent an inter-vertebral disc. The transverse ligament of the atlas and the lateral odontoid ligaments arederived from ligamenta conju<ralia costarum (p. ). The posterior occipito-azial ligament is a strong wide b
. Quain's Elements of anatomy. passes ARTICULATIONS OF THE ATLAS, AXIS, AND OCCIPITAL BONE. 157 directly upwards from the summit of the odontoid process to the centre of theanterior margin of the foramen magnum. The central odontoid lirrament is developed around the notochord in the interval betweenthe basioccipital and first vertebral centrum, and may therefore be said to represent an inter-vertebral disc. The transverse ligament of the atlas and the lateral odontoid ligaments arederived from ligamenta conju<ralia costarum (p. ). The posterior occipito-azial ligament is a strong wide band, covering thecruciform and odontoid hgaments. It is attached above in the basilar groove of theoccipital bone, and below to the body of the axis : many of the superficial fibres areprolonged into the posterior common ligament, of v/hich it forms the continuationupwards. The anterior occipito-atlantal ligament extends from the anterior borderof the occipital foramen, between the condyles, to the anterior arch of the Fig. 183.—The ligamextois structures which surround the articulatioxs oe the occiput AND TWO UPPER }^ A, the lower part of the skull sawn transversely through the basilar process, with the atlas and axis,viewed from before. 1, anterior occipito-atlantal ligament ; 2, accessory occipito-atlantal ligament ; 3,anterior atlanto-axial ligament. B, the lower jtart of the skull, with three adjacent vertebrie, viewed from behind. 1, posterioroccipito-atlantal ligament ; 2, posterior atlanto-axial ligament. C, the occipital bone sawn transversely through the foramen magnum, and a part of the arches ofthe atlas and axis removed, so as to show the posterior occipito-axial ligament. It is thill and membranous ; but in the median line it is strengthened by an acces-sory ligament, thick and round, placed in front of it, whicli is sometimes describedas the commencement of the anterior common ligament. The anterior atlanto-axial ligament, likewise thin and m
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectanatomy
