MIKE DEVLIN / SCIENCE PHOTO LIBRARY MIKE DEVLIN / SCIENCE PHOTO LIBRARY
Torso. X-ray of a healthy torso. The spine, which is made up of blocks of bone called vertebrae, runs down centre. The ribs radiate from the upper half of the spine, enclosing the lungs (black spaces). At bottom are the two hip bones that form the pelvis and support the upper body.
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