This is a contiguous series of sagittal MRI images of the lumbar spine in a 19y old woman. On the left are T1-weighted images; on the right are T2-weighted images. The first set of images are to the left of the median sagittal plane, and the series progresses to the patient's right side. The T2-weighted images are not precisely through the same section as the T1-weighted images, but they are pretty close. You can scan through the series either by (1) positioning the cursor over the image, holding down the left mouse button, then sliding the cursor up or down the image, or (2) hitting the keyboard keys > and < (no shift required). Scan through the series of slices and try to identify the structures to which lines are drawn. The answers will be revealed when you click on the appropriately labelled drop-down arrows below the image.