Vena cava
The venas cava higher and lower are the Veine S which bring back the Sang of the body to the Cœur. They empty both in the right auricle.
The lower Vena cava is on the right of the abdominal aorta and is ahead than this one with blood coming from the lower part of the body. Its diameter is of 3cm. She has a valvule being detached from the former edge of the oval pit and finishing on the former edge of the opening of the vena cava.
The higher Vena cava is located above the heart and is formed starting from the convergence of the brachiocephalic veins which contain blood coming from the head and of the upper limbs. She is avalvulaire and its diameter is of 2cm.
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