Veins of the Thorax - Dr. Ahmed Farid 

Posterior venous drainage (left side) _1st intercostal vein drain into left brachiocephalic vein _2nd & 3rd intercostal veins unite and form superior intercostal vein which drain also into left brachiocephalic vein _4th to 8th intercostal veins drain into the superior hemiazygous vein (the accessory hemiazygous vein ) _9th to 11th intercostal veins drain into the inferior hemiazygous vein AKA (the main hemiazygous vein)

The Azygous vein : _ begins at the level of L2 vertebra by union the lumbar vein and the right subcostal vein _ascends on the right side and pierces the diaphragm through the aortic hiatus at the level of T12 vertebra _ receives a tributary fromthe hemiazygous vein (the inferior hemiazygous vein ) at the level of T8 vertebra _receives a tributary from the accessory hemiazygous vein (the superior hemiazygous vein) at the level of T7 vertebra _ drain into the superior vena cava at the level of T4 vertebra

Anterior venous drainage : 1)intercostal veins of 7,8,9 intercostal spaces drain into musculophrenic vein 2) intercostal veins of 6,5,3 intercostal spaces drain into venae comitantes of internal thoracic artery 3) intercostal veins of 2&1 intercostal spaces drain into internal thoracic vein directly

Posterior venous drainage (right side) _1st intercostal vein drain into right brachiocephalic vein _2nd & 3rd intercostal veins unite and form superior intercostal vein which drains into azygous vein _4th to 11th intercostal veins drain into azygous vein also

no comment just a doctor being super professional

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is there a book for the urinary and male genital systems?