Heart and inferior vena cava anomaly

Heart and anomalous IVC

Project three completed! And here it is.   The assignment was to draw and render a heart and depict a specific case of continuous azygous as presented in the paper Anomalous Inferior Vena Cava with Azygos Continuation in a Japanese Man by Yoshiyuki et al. as published in Anatomical Science International (2007).  Basically, whats going on here is that most of the blood is returning to the heart via the azygos vein because the inferior vena cava (IVC) is not present.  Normally the IVC is formed by the joining of the common iliac veins and is later joined by the hepatic veins.  Normally, the azygos vein is a just a branch from the common iliacs.  In this instance the portal veinous system never joins with the systemic and so the blood returning from the liver enters directly into the right atrium while the systemic blood joins the azygous and enters the superior vena cava before entering the heart.

Ok, enough with the technical part.  This drawing was most definitely a practice in rendering for me.  This is also the drawing where I was struggling over getting the fat right (as I mentioned in my last post).  I’m very happy with how it turned out though.

Heart sketch

More Heart Sketches

from the cadaver lab

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