Postcostal anastomosis | definition of postcostal anastomosis by Medical dictionary
longitudinal anastomosis of intersegmental arteries giving rise to the vertebral artery.
post·cos·tal a·nas·to·mo·sis (pōst-kos'tăl ă-nas'tŏ-mō'sis)
Longitudinal anastomosis of intersegmental arteries giving rise to the vertebral artery.
References in periodicals archive
Usually the first part of vertebral artery develops from proximal part of dorsal branch of seventh cervical intersegmental artery proximal to postcostal anastomosis
The second part is derived from longitudinal communications of the postcostal anastomosis
with the consequent regression of the stems of the upper six intersegmental arteries.