It is the azygos vein that is located on right side of abdominal and thoracic aorta and in front of right vegus nerve that drains into superior vena cava on its posterior aspect just before vena cava drains into right atrium.
azygos vein
Middle cardiac (and posterior vein of left ventricle) *both drain in coronary sinus*
Eustation tubes which drain into the back of the esophagus.
internal jugular!
Azygous vein
Right Lymphatic
The external iliac vein drains into the common iliac vein as it enters the pelvis.
Hepatic vein drains the liver, carrying oxygen-depleted blood back to the heart.
The popliteal vein carries blood from the knee to the thigh and calf muscles and ultimately to the heart. The vein is formed from the merging of the two posterior tibial veins and ends as it merges in to the femoral vein.
Cardiac Vein
urethra
retromandibular-vein-1
small cardiac vein