ARNO MASSEE / SCIENCE PHOTO LIBRARY ARNO MASSEE / SCIENCE PHOTO LIBRARY
Human spine model. Model of a human vertebral column (spine) showing a number of its vertebrae (white discs). The spine is the central supporting structure of the human body. It is made up of a number of bones called vertebrae, separated by discs of cartilage (green). The bones sticking out at right angles to the vertebrae are the ribs.
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