 Okay, so now we're looking at the brain So this first part of the brain this large section here is the cerebrum And it's the part that most people distinctively recognize. It's got all these little cracks and ridges associated with it The cracks called sulci the ridges called gyri Okay, we can see it sitting down here on top of the cerebellum. Okay, so cerebellum Cerebrum and that's separated by a transverse fissure The brain is separated into a left and right hemispheres here, and it's separated by the longitudinal fissure Okay, they also have the lateral sulcus. She's immediately apparent right here Okay, our central sulcus Is found it's a line that's going to separate all the way down here Okay, so you can see the central sulcus here and it has Precentral gyri and a postcentral gyri pre being in the front post being in the back