Think of it this way. Anything Phrenic has to do with the diaphram. We have the superior and inferior parts of a diaphram. Herein lies the answer - the superior portion is drained by the Superior Phrenic vein and the inferior portion (follows the same logic) drained by the Inferior Phrenic vein. Both of these dump blood into the IVC. On another matter, remember the heart (cardia) rests on the diaphragm and the diaphram is a muscle? We also have the Pericardiacophrenic vein and Musculophrenic veins both of which dump their blood into the Internal Thoracic vein to take it up to the Brachiocephalic vein. I am sure you will agree with me that we always need another exit strategy, just in case. Anatomy is a challenge and that is how I try to learn it - by anatomical relations. Black Moses JCU Med
The renal veins are veins that drain the kidney. They connect the kidney to the inferior vena cava.
The renal veins.
To drain blood from the kidneys into the (inferior) vena cava.
renal veins
superior and inferior vena cava
Renal veins empty into the inferior vena cava
The capillaries drain the blood into veins which drain into the large veins, inferior vena cava collects the blood from the lower part of the body and the superior vena cava collects blood from the upper part of the body, and they both drain the blood in the right atrium of the heart from where it gets pumped to the lungs for oxygenation.
the main function of a renal vein is to carry urine to the kidneys
Arteries drain (pump blood) into veins. Veins drain into your lungs and heart to be re-oxygenated. (This is not true for veins and arteries to and from your lungs.)
after exchange takes place between the veins and the arteries at the capillaries, blood travels through venules to larger veins which all hook up the superior and inferior vena cava, which drain into the R atrium of the heart.
The left gondanal vein drains into the left renal vein and the right gonadal vein, the renal veins and the hepatic veins drain into the inferior vena cava. The blood will then travel along the inferior vena cava to return to the right atrium.
In human anatomy, the hepatic veins are the veinsthat drain de-oxygenated blood from the liverinto the inferior vena cava.
is a collection of veins joined together to form a large vessel that collects blood from the myocardium of the heart. It is present in humans and other animals. It receives blood mainly from the small, middle, great and oblique cardiac veins. It also receives blood from the left marginal vein and the left posterior ventricular vein. The anterior cardiac veins drain directly into the right atrium. (Some small veins drain into any of the four chambers of the heart.) It drains into the right atrium on the posterior, inferior surface, medial to the inferior vena cava opening.
The radial and ulnar veins.