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					Blood supply to the spinal column and spinal cord
                                                                                                                 B 06
· Main components of the spinal column · Anatomy


 The arterial blood that supplies the cervical and thoracic vertebrae is transported through the branches of the




                                                                                                                        Spine Surgery Information Portal · Prof. Dr. Jürgen Harms · www.harms-spinesurgery.com
 subclavian artery. The blood supply to the lumbar spine, the sacrum, and the coccyx is transported by branches
 of the abdominal and internal iliac arteries.
 Venous drainage from the cervical and thoracic spine occurs after the venous blood has collected in the internal
 and	external	venous	plexus,	then	flows	through	the	azygos	vein,	hemiazygos	vein	and	accessory	hemiazygos	
 vein into the superior vena cava.
 Venous	blood	from	the	lumbar	spine,	sacrum	and	coccyx	flows	through	the	internal	and	external	venous	plexus	
 into the lumbar veins and from there into the inferior vena cava.

 • Arterial blood supply to the spinal column, presented in simplified form


                                          · Arteria vertebralis
                                          · Arteria spinalis anterior


                                          · Rami spinales



                                          · Arteria cervicalis ascendens
                                          · Arteria subclavia
                                          · Arcus aortae


                                          · Truncus brachiocephalicus


                                          · Aorta


                                          · Arteria intercostalis




           Prof. Dr. med. Jürgen Harms · Klinikum Karlsbad-Langensteinbach · Guttmannstraße 1 · 76307 Karlsbad
                                                                                                                  1
                                  © www.harms-spinesurgery.com 2007. All rights reserved.
Blood supply to the spinal column and spinal cord
                                                                                                                    B 06
· Main components of the spinal column · Anatomy


 The spinal cord is supplied mainly by the anterior (1) and posterior (2) spinal arteries (arteria spinalis anterior




                                                                                                                           Spine Surgery Information Portal · Prof. Dr. Jürgen Harms · www.harms-spinesurgery.com
 and posterior) as well as by the arteria spinalis mediolateralis (3).
 In the neck region, the spinal arteries branch off of the vertebral artery (arteria vertebralis), which in turn
 branches off of the subclavian artery (arteria subclavia).
 Blood	flows	into	the	spinal	arteries	in	the	thoracic	region	from	the	intercostal	arteries	(arteriae	intercostales)	and	
 in the lumbar region from the lumbar arteries (arteriae lumbales).

 • Blood supply to the spinal cord




                                          · Arteria spinalis posterior (2)




                                          · Arteria spinalis anterior (1)


                                          · Arteria spinalis mediolateralis (3)


                                          · Arteria radicularis anterior




           Prof. Dr. med. Jürgen Harms · Klinikum Karlsbad-Langensteinbach · Guttmannstraße 1 · 76307 Karlsbad
                                                                                                                      2
                                  © www.harms-spinesurgery.com 2007. All rights reserved.

				
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