We have the middle portion known as our diaphysis. And what connects our Epiphesis to our diaphysis is a section known as aromataphesis. And these two sections are also found on the bottom of the bone. So we have the epithesis on the bottom most and the topmost, we have the middle section, the shaft, that's our diaphysis. And we have the metaphysis that connects our epithesis to our diaphysis. So let's discuss the individual components of the structure of our long bones.