And we'll discuss what the joint is and what types of joints we have in our body in a future lecture. So basically, this consists of a type of cartilage known as the highland cartilage, where the Hylin simply means it's transparent. And this highland cartilage connects our bone to our joint. Now, the next portion we're going to discuss is our epithesis. And the epithesis contains a special type of bone structure known as our spongy bone, also known as the cancellus bone, as well as our trabicular bone. And it's called trabicular because the structure resembles a honeycomb, it resembles a sponge.