. Anatomy, descriptive and applied. Anatomy. 738 THE VASCULAR SYSTEMS 2. The intravertebral veins {plexus venosi vertebrales interni) are situated between the spinal dura and the vertebrae. They consist of two longitudinal plex- uses, one of which runs along the posterior surface of the bodies of the vertebrae, anterior longitudinal vertebral veins. The other plexus, posterior longitudinal ver- tebral veins, is placed on the inner or anterior surface of the laminae of the vertebrae. The anterior longitudinal vertebral veins (sinus vertebrales longitudinales) consist of two large, tortuous vein
. Anatomy, descriptive and applied. Anatomy. 738 THE VASCULAR SYSTEMS 2. The intravertebral veins {plexus venosi vertebrales interni) are situated between the spinal dura and the vertebrae. They consist of two longitudinal plex- uses, one of which runs along the posterior surface of the bodies of the vertebrae, anterior longitudinal vertebral veins. The other plexus, posterior longitudinal ver- tebral veins, is placed on the inner or anterior surface of the laminae of the vertebrae. The anterior longitudinal vertebral veins (sinus vertebrales longitudinales) consist of two large, tortuous veins which extend along the whole length of the vertebral column, from the foramen magnum, where they communicate with each other by a venous ring around that opening and with the basilar and occipital sinuses through the foramen, to the base of the coccyx, being placed one on each side of the posterior surface of the bodies of the vertebrae along the margin of the posterior common ligament. These veins communicate opposite each vertebrae by transverse trunks which pass beneath the ligament. Each transverse trunk receives the large vena basis vertebrae {v. basivertebralis) from the interior of the body of the vertebra. The anterior longitudinal vertebral veins are least devel- oped in the cervical and sacral regions. They are not of uniform size throughout. The exfra-vertehral Fig. 515.—Transverse section of a showing the vertebral Vertical section of two thoracic vertebrce showing the vertebral veins. being alternately enlarged and constricted. At the intervertebral foramina they communicate with the extravertebral veins, and with the vertebral veins in the neck, with the intercostal veins in the thoracic region, and with the lumbar and sacral veins in the corresponding regions. The posterior longitudinal vertebral veins, smaller than the anterior, are situated one on either side, between the inner surface of the laminte and the theca yerte- bralis. They communicate (li
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1913
