femoral vein
Vein collecting blood from the deep structures of the thighs and receives blood from the great saphenous vein, among others. inferior vena cava
Vein carrying blood deoxygenated in the lower portion of the body (below the diaphragm) to the right atrium; it is the largest vein in the organism

Hi The right femoral vein continues as the right external iliac vein which joins the inferior vena cava. From the inferior vena cava blood passes to the right atrium, then to right ventricle and to the right lung via the the right pulmonary artery. The blood in the pulmonary capillaries is subjected exchange of gases across the alveolar membrane. Gases exchange across the alveolar membrane into the alveoli, then to bronchioles, bronchii , trachea, larynx, pharynx, nose and then to the outside air. Hope this helps. Take care

I'm in the femoral vein traveling up into the bifucration where the right femoral and left femoral veins meet to form the inferior vena cava. Hey - there's my friend coming from the left femoral - how are you?! Ok, let's hold hands and travel up the inferior vena cava. Phew, traveling up against gravity sure is hard. Good thing these valves in the veins are here to catch me if I fall back a little. Ok, here we are, lots of beating, we must be at the heart. This is the right atrium, let's get in there and...whooosh, through the tricuspid valve into the right ventricle. Careful, there's lots of pumping going on, so don't get lost. Ok, there's the