I want to state again, that I know anatomy pretty well. I can tell you where the LAD, the RCA and the circumflex are. I can tell you where the subclavians are, as well as the brachiocephalics. I can tell you what the thalamus is, the hypothalamus, and what the difference is. I am a scrub nurse. I have assisted in surgery. I have dissected. I know where things are in the human body, and the variations among individual people. I have seen surgeons go searching. I have spotted what they were looking for. I feel confident in my grasp of anatomy.
The two dimensional Tshirt guy is a joke, and I cannot believe a physician/instructor would be this ignorant. Actually, he's not. Teaching this type of anatomy for self defense with a gun is a gimmick. That is all it is, a gimmick. He's getting students and making money! He's smart! When T shirt guy turns sideways, his heart is NOT on the surface of his chest as depicted by the drawing on his shirt. His actual heart is obscured by his arm in a side view if the arm is down. His actual heart is 4-6 inches from that drawing on his shirt. Tshirt man is no different than that paper target, but now he has an aura of reality because he is presented as fact by a physician. What is next? Shooting specific areas of the heart with a .22LR to induce arrythmias? Yelling at the BG "Hey, face forward, so I can align my anatomical landmarks please!"?
This type of precision anatomy shooting is based on the assumption that a bullet will continue to travel in a straight line after it enters a human body. (At least I have to assume that this "instructor" does not really believe the heart is on the surface of the chest as his Tshirt depicts). Once a bullet enters a human body, all bets are off as to where it will go and where it will stop. You might be aiming for the bicuspid valve, and be right on target, and then that darned bullet decided to take a detour once inside the chest, and it ended up in the pyloric valve instead. Doggone it, now you have to shoot again, and the damned BG will just not hold still for you. This kind of anatomical marksmanship is founded on the idea that the bullet will continue to travel in a straight line after penetration. They don't. All it takes is one evening digging out bullets to realize that the straight line through the body idea is a myth.
This type of training could convince a gun ignorant jury that you had the training to shoot selectively and prevent the BG from dying. That is really dangerous! I can almost promise you in a lethal encounter you will be running, twisting, falling, tripping, and trying your damnedest to get as many rounds into your target's COM as you can, whether you have had this type of training or not. Since you attended Dr. Shootgud's classes though, the jury will look at all that training you got........Oh no, the BG could have been easily imobilized with a hit to the acetabulum. Now you are a murderer.
In a lethal encounter, the shooter trying to hit these dynamic anatomical targets will likely die. While he is taking the time to choose whether he would like to hit the SA node, the AV node, or some purkinje fibers, his opponent will be blasting his COM into oblivion.. He would be better trained if he had invested his time into quickly getting his gun out of the concealed holster without shooting himself, aligning his sights COM without shooting the ground in front of him, and putting two quick hits into an area 3 inches in diameter that is 15 feet away from him. It is hard enough to do that.
BTW it goes: skin, galea aponeurotica, skull, dura mater, arachnoid, and then pia mater. Then you get into grey or white MATTER.
edited to add: I'm sorry, I reread my post, and it sounded rather contrary to how I try to talk to people. I guess what I am trying to say is I know human anatomy very well, from years of hands on experience. I recognize that a 150 pound man's thoracic cavity will be different than a 350 pounders. I have been shooting most of my life, and have trained hard and well to defend myself. I have been in situations that had a high pucker factor. When in the military, I experienced incoming fire. I have to say, in all honesty, if I have another instance when I must defend my life, I will be putting my firearms training to use, not my surgical training. I do not believe that this type of training is of use to anyone with the exception of a sniper. In a self defense situation, I feel it is far more important to gain the initiative, get your gun safely into the fight, and avoid taking hits yourself while putting as many into the BG as you must to survive. Being able to hit moving targets while moving yourself is far more important than knowing anatomy. Everyone has a gimmick to get people into their classes. That is what I think this is. No offense meant to those who may find it interesting.