GUSTOIMAGES / SCIENCE PHOTO LIBRARY GUSTOIMAGES / SCIENCE PHOTO LIBRARY
Human skeletons. Coloured X-ray of plastic models of the human skeletal system. The 206 bones of the skeleton provide protection and support, and the joints allow locomotion. The ribs of the chest (upper frame) enclose the heart and lungs. The pelvis (across centre) protects the lower abdominal organs. The flexible backbone runs from the pelvis to the base of the skull, protecting the spinal cord. The long leg and arm bones provide structural support. The humerus (upper arm bone) articulates with the radius and ulna (lower arm bones) at the elbow. The femur (thigh bone) articulates with the fibula and tibia (lower leg bones) at the knee.
Model release not required. Property release not required.