How do bones support the body and help it move?

Bones serve as the essential internal framework of the human body, providing structural support and enabling movement through their interaction with soft tissues.1

Structural Support

Bones provide a rigid scaffold that supports the body's weight and maintains its posture. This framework protects vital internal organs—such as the brain, heart, and lungs—while providing a stable base for the mechanical action of soft tissues. The axial skeleton, particularly the vertebral column, acts as the primary support for the trunk, allowing humans to maintain an erect posture.12

Enabling Movement

Bones facilitate movement by acting as levers for the muscular system. Most skeletal muscles are firmly anchored to at least two bones via tendons. When these muscles contract, they pull on the bones, creating motion at the joints where bones articulate.13

The structure of these joints—ranging from ball-and-socket configurations to hinge joints—determines the range and direction of movement, allowing for everything from delicate manual tasks to complex physical activities.13