artist90VEINS: 1-Intercostal veins drain into Azygous vein which drains into SVC BUT some blood from this Azygous vein is also draining into BATSONS VERTEBRAL VENOUS PLEXUS how the breast cancer metastasizes to vertebral column.
2-Internal thoracic(mammary) vein drains directly into Brachiocephalic vein.
3-Lateral thoracic vein drains into Axillary vein which drains into Subclavian vein which drains into Brachiocephalic vein.
ARTERIES ARE DIFFERENT:
Subclavian artery----branches into---Internal thoracic(mammary) artery---Intercostal arteries. Internal thoracic artey is used for CABG if there is 1 vessel block.+22019-07-17T14:22:56Z