The bones of the skull change as an individual grows older. Plastic surgeons studying humans using three-dimensional CAT scans note several important changes as people grow older. According to NPR, these changes show up ... More »

The changing shapes of the moon, known as phases, are actually just changes in perspective from Earth, which appear as a change in the moon's form. From Earth, only one side of the moon ever appears illuminated by the su... More »

Sunlight reflects off the moon's surface, and it is seen at different angles from the Earth as the moon moves in orbit around the planet. These changes are known as lunar phases, which occur in a cycle that repeats every... More »

The brain is protected by one of two main parts of the skull called the neurocranium, which actually consists of eight different bones. The neurocranium includes the frontal bone, two parietal bones, two temporal bones, ... More »

Flat bones in the human body include the ribs, sternum (breastbone), scapula (shoulder blade), pelvic girdle and many of the 29 bones that make up the skull. Flat bones act as protection for essential organs or as attach... More »

Examples of fixed joints include the joints between the bones in the skull and the joint where the radius and ulna bones meet in the lower arm. Fixed joints, also known as fibrous joints, are places where two bones come ... More »

The skull consists of two groups of bones: the cranium and the face. The cranium is the cap of the skull, and it supports the brain, related nerves and vessels. The facial skeleton supports the skin and soft cavities of ... More »