So here we have an example problem that asks, how are synchondroses similar to sutures? And we've got these 4 potential answer options down below. Now, option a says that they are both made of rigid hyaline cartilage. But of course, we know that this is not true for sutures because recall that sutures are a type of fibrous joint, where the bones of the skull are connected by dense irregular connective tissue. Not connected by hyaline cartilage.

So for that reason, we can eliminate answer option a. Now option b says that the epiphyseal plates and sutures can both ossify over time to form synostoses, and recall that the epiphyseal plates are examples of synchondroses. And so, recall from our previous lesson videos that this is actually true. The hyaline cartilage and epiphyseal plates can ossify over time to formsynostoses. the sutures of the skull can also ossify over time to form synostoses. And so, because option b is true, we can go ahead and highlight it as the correct answer option.

Recalling that ossification just means the replacement or the formation of new bone tissue. And, synostoses recall are just when 2 bones fuse together into a single bone. Now, let's check option c and d just to be sure. Option c says that the costosternal synchondrosis and sutures both allow a small amount of movement, but recall that joints that allow for a little or an average amount of movement with a slight amount of movement are categorized as amphiarthroses. But, recall that synchondroses and sutures are both classified as synarthroses, meaning that they are still or stationary, and generally considered immovable joints.

And so, option c is not going to be the best option for this example. Now, option d says that they are both fibrous joints, but of course, we know that this is not true. We know that the sutures are considered fibrous joints. However, the synchondroses with that root chondro, that means cartilage, it is going to be a cartilaginous joint, not a fibrous joint. And so that's why we can eliminate option d.

And so this here concludes this example problem, and I'll see you all in our