dorsal branch of posterior intercostal arteries

me·di·al cu·ta·ne·ous branch of dorsal branch of posterior intercostal arteries

[TA] branch of the initial posteriorly directed branches of the third through eleventh intercostal arteries that runs toward the midline to supply the skin overlying the deep back muscles. Synonym(s): ramus cutaneus medialis rami dorsalis arteriarum intercostalium posteriorum III-XI [TA]