Intersegmental artery
The intersegmental arteries are a set of 30 arteries arising from the embryonic dorsal aorta,[1] with each artery providing blood supply to one somite and its derivatives.
Cervical intersegmental arteries[edit]
The cervical intersegmental arteries merge into the vertebral artery[1] with the exception of the 7th (or possibly the 6th) cervical intersegmental artery, which becomes the subclavian artery.[2] The confusion arises because the vertebral artery drains into the subclavian artery following the disappearance of the dorsal aortae in part of the cervical region.
Thoracic intersegmental arteries[edit]
The thoracic intersegmental arteries all develop into the intercostal arteries.[1]
Lumbar intersegmental arteries[edit]
The lumbar intersegmental arteries develop into the lumbar arteries, with the exception of the 5th (last) lumbar intersegmental artery, which becomes the common iliac arteries.[1]
Sacral intersegmental arteries[edit]
These arteries merge into the lateral sacral artery.[1]
References[edit]
- ^ a b c d e Moore, Keith L.; Persaud, T. V. N.; Torchia, Mark G. (2015-04-06). The Developing Human: Clinically Oriented Embryology. Elsevier Health Sciences. p. 288. ISBN 9780323313483.
- ^ "Aortic arches". www.embryology.ch. Archived from the original on 2018-10-04. Retrieved 2016-08-10.