This is a three-dimensional model of the human heart. It is built almost completely from dark red components. The outer shell is smooth and I've incorporated techniques to continues the smooth area on the posterior of the heart also.
Right and left atria - The atria are represented with the vehicle hood pieces as they represent distinct exterior structures that mimic the human heart.
Right and left ventricles - On the human heart these are fairly indistinct externally
Pulmonary artery - Constructed from blue pieces to represent the deoxygenated blood that leaves the right ventricle and is carried to the lungs.
Aorta - Constructed from red pieces to represented oxygenated blood that leaves the left ventricle to be carried to the body. The aortic arch travels over the right pulmonary artery.
Superior vena cava - Constructed from blue pieces, the superior vena cava enters the superior aspect of the right atria bringing deoxygenated blood from the upper body.
Inferior vena cava - Constructed from blue pieces, the inferior vena cava enters the inferior aspect of the right atria bringing deoxygenated blood from the lower body.
Right and left atria - The atria are smaller and weaker walled structures that pump blood into their respective ventricle. The streamers are used for the valves.
Right and left ventricle - The ventricles are the stronger two of the four heart chambers and pump blood to the lungs and body respectively. The pulmonary artery outflow tract is depicted in the model but the left ventricular outflow tract is not due to three-dimensional spatial constraints.
Overall I am very happy with the build and the true difficulty that I had in constructing this. Ever the perfectionist I know there are components that could be improved with specific pieces for modeling. The aortic arch could be much smoother with curved large red tubes. The shells could be streamlined, but I am ecstatic with how the heart came out.
I hope you all enjoy it as much I do. Take care. Be safe.