Posterior spinal artery

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 [edit on Wikidata]

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.^{[citation needed]} It is usually double, and spans the length of the spinal cord. It supplies the grey and white posterior columns of the spinal cord.^[1]