EVERYDAY SCIENCE

Detailed explanation-1: -There are 206 bones in an adult human skeleton. Each bone has three main layers: Periosteum: The periosteum is a tough membrane that covers and protects the outside of the bone. Compact bone: Below the periosteum, compact bone is white, hard, and smooth.

Detailed explanation-2: -Skeleton of human body is made up of bones and cartilage.

Detailed explanation-3: -Every single person has a skeleton made up of many bones. These bones give your body structure, let you move in many ways, protect your internal organs, and more.

Detailed explanation-4: -The Skeletal System Consists Of More Than Bones But look closer and you’ll see even more structures. The human skeleton also includes ligaments and cartilage. Ligaments are bands of dense and fibrous connective tissue that are key to the function of joints. Cartilage is more flexible than bone but stiffer than muscle.

Detailed explanation-5: -Bone is made mostly of collagen, a protein that is woven into a flexible framework. Bone also contains calcium phosphate and calciumcarbonate, minerals that add strength and harden the framework. The combination of calcium and collagengives the bone its strength and flexibility.