This is a contiguous series of axial MRI slices of the distal thigh in a 15y old boy. The first section is near the lower limit of the gluteus maximus insertion, and subsequent sections are progressively more distal. 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 this series of MRI slices and try to identify the labelled structures. The answers will be revealed when you click on the appropriately labelled drop-down arrows below the image.