
Bone structure
The human bone structure forms the framework of the body, providing support, protection, and enabling movement. Bones are rigid yet lightweight, made mostly of calcium and phosphate minerals, and contain living cells that help with growth and repair. They connect at joints, which allow for flexible movement. Bones also contain marrow, where blood cells are produced. Overall, the skeletal system not only supports and shapes the body but also plays a vital role in protecting organs and storing essential minerals.