Posterior spinal artery
The posterior spinal artery (dorsal spinal arteries) arises from the vertebral artery in 25% of humans or the posterior inferior cerebellar artery in 75% of humans, adjacent to the medulla oblongata. It is usually double, and spans the length of the spinal cord. It supplies the grey and white posterior columns of the spinal cord.
| Posterior spinal artery | |
|---|---|
The three major arteries of the cerebellum: the SCA, AICA, and PICA. (Posterior spinal artery is not labeled, but region is visible.) | |
1: Posterior spinal vein 2: Anterior spinal vein 3: Posterolateral spinal vein 4: Radicular (or segmental medullary) vein 5: Posterior spinal arteries 6: Anterior spinal artery 7: Radicular (or segmental medullary) artery | |
| Details | |
| Source | Vertebral or posterior inferior cerebellar |
| Branches | Descending and ascending branch |
| Vein | Posterior spinal veins |
| Identifiers | |
| Latin | arteria spinalis posterior |
| TA98 | A12.2.08.013 |
| TA2 | 4543 |
| FMA | 50522 |
| Anatomical terminology | |
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