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20 Cards in this Set
- Front
- Back
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What are the longitudinal vessels a branch of?
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Vertebral arteries.
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Which longitudinal vessel runs along the anteromedian fissure?
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Anterior Spinal Artery
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Which paired longitudinal vessel runs along the posterolateral sulci?
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Posterior spinal arteries.
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What are the longitudinal vessels reinforced by?
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8-10 Segmental Medullary Arteries.
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What are the Segmental Medullary Arteries branches of?
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Segmental Spinal arteries.
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What is an AKA for Segmental Spinal arteries?
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Feeder arteries
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How do the Segmental Spinal arteries enter the vertebral canal?
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Via the IVFs.
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Which three arteries does the Segmental Spinal arteries arise from?
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1) Vertebral aa in the neck
2) Post. Intercostal aa in the T/spine 3) Lumbar aa in the abdomen |
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How do the Segmental Spinal arteries branch?
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They branch in the IVF to become anterior and posterior Radicular arteries (Roots) and also the segmental medullary arteries.
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What is the largest Segmental Medullary arteries?
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Artery of Adamkiewicz or Arteria Radicularis Magna
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What is the origin of the Artery of Adamkiewicz or Arteria Radicularis Magna?
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Lower thoracic spine or upper lumbar spine, usually on the left side to supply the Lumbar spine.
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How many veins of the vertebral column are there?
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3 anterior and 3 posterior spinal veins
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How are the veins of the vertebral column drained?
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By 12 anterior and posterior medullary and radicular veins.
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What do the veins draining the spinal cord join?
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Internal Vertebral Venous Plexus (epidural); External Vertebral Venous Plexuses; and Basivertebral veins.
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What is the Internal Vertebral Venous Plexus?
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Located in the epidural space, and is anterior and posterior within the spinal canal. It is valveless and surrounds the dura.
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What are the External Vertebral Venous Plexuses?
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Both anterior External Vertebral Venous Plexus, and posterior External Vertebral Venous Plexus.
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Where is the Anterior External Vertebral Venous Plexus located?
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Found on the anterior surface of the vertebral bodies.
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Where is the Ventral External Vertebral Venous Plexus located?
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Found around the spinous processes.
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What do the Basivertebral veins drain?
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Emerge from the foramina on the posterior surfaces of the vertebral bodies.
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What are the Vertebral Arteries?
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The vertebral arteries are major arteries of the neck. They branch from the subclavian arteries and merge to form the single midline basilar artery in a complex called the vertebrobasilar system, which supplies blood to the posterior part of the circle of Willis and thus significant portions of the brain.
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