What is skeletal system?
A set of bones or cartilage, ligaments, and tendons that acts as a frame and holds the body and its organs together while also allowing locomotion. Endoskeletons are within the body, while exoskeletons surround the outside of the body.
Computer artwork of the human skeletal system. The 206 bones of the skeleton provide protection and support, and their joints allow locomotion. The skull (at top) protects the brain. The ribs of the chest (at upper center) enclose the heart and lungs. The pelvis (at center) protects the lower abdominal organs. The flexible backbone runs from the skull to the pelvis and protects the spinal cord. The long leg and arm bones provide 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.
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