 Hello. So frontal and parietal. We've already been here. We've done this. The frontal bone is here and your visuals are nice because they divide it up by color, just like rainbow marble, rainbow skull does. You can see that the orange bone is the frontal bone and you can see it all the way around. Parietal bone is this big, giant blue one, green in rainbow marble, rainbow skull. Two very straightforward and easy bones. Now, frontal bone has just a couple of structures, bony landmarks that we're going to know. One of them is this flat space in between the eyeballs. Can you see that? Go ahead and touch it. This space right here, I don't know why, but I like this landmark and it's called the glabella. And you're going to have your notes, so I'm going to let you write that down otherwise we're all going to get frustrated. So this is your glabella and it's a marker on your frontal bone. The other structure that you're going to need to know about your frontal bone is that there is a sinus. There's a frontal sinus embedded in that frontal zone, bone, frontal bone of your whatever. And it's actually found, okay, so check out this guy. Here's another plastic skull, but this one's all white. This is more what your skulls look like in our bone boxes. And so if you tip your skull down and look in, right about here on the frontal bone, you actually will see some holes and like hollow places. And that's your frontal sinus. Your frontal sinuses are just embedded in the frontal bone itself. That's it. How is that for easy? Do you want to just take your quiz right now and call it good? That's awesome.