| human circulatory system render previews made with yafray includes:
internal jugular vein
subclavian vein
axillary vein
cephalic vein
brachial vein
basilic vein
median cubital vein
renal vein
common illiac vein
internal illiac vein
external illiac vein
femoral vein
popliteal vein
peroneal vein
great saphenous vein external and internal cartoid artery
common cartoid artery
brachiocephalic artery
subclavian artery
heart
axillary artery
abdominal aorta
brachial artery
renal artery
common illiac artery
internal illiac artery
radial artery
ulnar artery
external illiac artery
deep femoral artery
femoral artery
popliteal artery
peroneal artery
posterior tibial artery
anterior tibial artery if you have problem with smoothing, you can download smoothed version, or open attached blend file with blender (included in 3ds and obj file) smoothed 3d file has 127,056 polygons | 
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