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medial branches

branches directed toward the midline, to the middle. Nomina Anatomica lists medial branches (ramus lateralis/rami mediales) of the following: 1) anterolateral central arteries, rami mediales arteriarum centralium anterolateralium; 2) dorsal primary rami of spinal nerves, rami medialis ramorum dorsalium nervorum cervicalium/thoracicalium/lumbalium/sacralium; 3) left branch of portal vein, rami mediales rami sinistri venae portae hepatis; 4) left hepatic duct, ramus medialis ductus hepatici sinistri; 5) middle lobar branch of right pulmonary artery, ramus medialis ramorum lobarium medium arteriorum pulmonarium dextrum; 6) supraorbital nerve, ramus medialis nervi supraorbitalis.

Synonym: rami mediales.