collateral branches of posterior intercostal arteries 3-11

col·lat·er·al branch·es of pos·te·ri·or in·ter·cos·tal ar·ter·ies 3-11

[TA] branch arising near angle of rib and descending to run along superior border of rib below; distribution: lower half of intercostal spaces 3-11; anastomoses: collateral branches of anterior intercostal arteries. Synonym(s): ramus collateralis arteriarum intercostalium posteriorum III-XI [TA]