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Superior Hemiazygos vein
Inferior Hemiazygos Vein
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- drains blood from
- posterior parts of intercostal spaces
- posterior abdominal wall
- pericardium
- diaphragm
- bronchi
- oesophagus
- variable origin
- often formed from union of right ascending lumbar vein and right
subcostal vein
- ascends through aortic opening of diaphragm
- on right side of aorta until fifth thoracic vertebra
- arches forward over root of right lung to empty into posterior surface of
superior vena cava
Tributaries include
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