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. And let's begin with this purple section found on this side as well as on this side, which is not shown. So this is known as our articular cartilage. So articular simply means that's the connecting point between the bone and our joint.