后颅窝静脉、脊髓血管 课件.ppt

VENOUS DRAINAGE OF THE POSTERIOR FOSSA ;The venous drainage of the posterior fossa can be divided into 3 groups according to the location and direction of drainage: 1.superior group (Galen’s vein group) 2.anterior group (petrosal group) 3.posterior goup (tentorial group);1.SUPERIOR GROUP;1.1 Precentral cerebellar vein;1.2 Superior vermian vein;1.3 Posterior mesencephalic vein;1.4 Anterior pontomesencephalic vein;1.5 Lateral mesencephalic vein;1.6 Quadrigeminal vein;2. ANTERIOR GROUP;3. POSTERIOR GROUP;POSTERIOR GROUP;THE ARTERIAL AND VENOUS ANATOMY OF THE SPINAL CORD;Anterior spinal artery; Posterior spinal artery; Along its course, the branches from the vertebral artery, ascending cervical artery, intercostal arteries, lumbar arteries, middle sacral artery and the internal iliac artery join in different segments to form the anterior or posterior longitudinal spinal axis. ;SPINAL ARTERIES;1. The first group;1.1 The thyro-cervical trunk;1.2 Costocervical trunk;2. The second group;Intercostal Artery;Lumbar Arteriy;3. The third group;4. Radicualar Artery;Radicualar Artery;The radicular artery involving in contribution to the third area is called the radiculomedullary artery, in adults, most of them regress, and left behind 6-8 anterior radiculomedullary arteries and 10-23 posterior radiculomedullary arteries. Because the origin of spinal arteries is variable, spinal arteriography shoud include all of the three groups mentioned above. ;4.1 Radiculomedullary Artery;Radiculomedullary arteries ;The radiculomedullary artery runs anterior to the dural sheath into the intervertebral foramen . It penetrates the dura, and