Most people know about the basics of the Circulatory System; that the Arteries transport freshly oxigenized blood
which the heart draws from the lungs into the remotest parts of the Human Body and that the Veins transport the "exhauste", oxygen-drained "blue"
blood backwards into the heart onwards into the lungs where it gets reoxigenized - so far, so good.
Surgeons know (I almost said "bloody well") that the Veins are NOT blue and the Arteries are only red on the inside -
actually, the vessels, like the nerves and other bodily features, are sometimes very hard to tell apart at first glance and this is exactly why
a good surgeoan is also a good anatomist - plus he must have the hands of a pianist and be professionally paranoid...
"nicking an artery" is among their worst nightmares, for a reason. There are blood vessels, actually quite a couple of them, the "nicking" of which can lead
to almost instant death, irreversibly. The Romans knew exactly where to use their Gladius (go for the neck or the groin),
now this is what a surgeon will do his best to avoid but then a scalpel is very tiny - the Gladius was very broad AND sharp so as to sever as many blood
vessels as possible in one go - oh I apologize, this is really not a history site.
Still, it should be more known in our day of constant Police Action Movies, that it is rather
hard to shoot someone in the upper leg and make usre he does not bleed out befrre an ambulance is even half way there.
So, does everybody know where the Femoral Artery is ? ThatÝs good.
Then of course there is the small complication
that many human bodies are pretty much unlike each other, a fact any surgeon understands but (to our chagrin) many engineers have no patience for...
Back to Animation, one problem is always in existence with elaborate collections of *vessels*,
which are after all similar to pipelines - though they interconnect a lot more and have an erratic way
of curving behind bones, muscles and what not... the problem is the curvature itself mainly.
In the Human Body Anatomy or rather itÝs 3D equivalent, this applies mostly to Blood Vessels and Nerves.
They get very curvy and they get very peripheric and rather tiny, and one simply has to draw the line somewhere as the Animator will not be overly happy with a
million polygons more for even nicer curves - as animations consist of at least 25 renders oer second,
files that render a third more slowly will not be his favorites so we keep it on the scarce side with the curvature wherever possible -
now that is one thing. It gets bad when we receive calls for even "slimmer" file sizes and have to reduce the 3d anatomy,
this is where pipelines always suffer first and show up where the limits are... so we cannot go for gold in the peripherical parts of the blood vessels
though we would really like to - at least in parts of the body. We cannot as a default but if you need such a file
because your work is more of the scientific than the spectacular sort, then please tell us so and we shall see what we can do.
More information about human circulatory matters.
Upwards (Authoritative Info about the 3D Model Set).
The free models of this page :
Format : .3ds / Click to Download