Anteriorly there is the ASA in the midline
Pasteriorly there are two posterior spinal arteries foff midline.
Vertebral artery
Gives radicular branches to the spinal cord
Intracranial vertebral arteries give branches that merge to form the top of the ASA.
Ascending Cervical
Branch of thyrocervical trunk
Dorsal Cervical
Branch of the costocervical trunk
Inservice Question (2009)
Q: Which of the following is TRUE regarding the artery of Adamkiewicz?
A:
A. It supplies the posterior spinal cord.
B. It usually enters the spinal canal from the left side.
The artery of Adamkiewicz is left-sided approximately 75% of the time.
C. It arises from the supreme intercostal artery.
D. It is visualized by catheter angiography but not by CTA or MRA.
E. A hair-pin turn of this artery indicates mass effect on the spinal cord.