The cardiovascular system contains a functional heart (50 parts) and detailedly modeled valves, other interiors and coronaries. 348 arteries, 410 venes (full latin nomenclature for parts). The veins and arteries of the head and body are also available in a somewhat simpler issue consisting of only two (closed) parts, which is essential for easy animation, it is reasonably detailed with 145.000 polygons. Set fits very nicely and without interference, to the skeleton, muscles and all other parts of the P1 set.