The posterior and anterior radicular arteries run along the posterior and anterior roots of the spinal nerves and supply them with blood.
Relationship to segmental medullary arteries
Radicular arteries can sometimes be replaced functionally by
segmental medullary arteries.
However, unlike those arteries, radicular arteries do not form
anastamoses with the
anterior
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position prov ...
or
posterior spinal arteries
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 supplies the grey and white posterior columns ...
.
Radicular arteries are also generally smaller.
The
Artery of Adamkiewicz is sometimes called "great radicular artery of Adamkiewicz",
however it is in fact a segmental medullary artery.
References
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Arteries