MICROANATOMY

Detailed explanation-1: -The biological structure that provides a smooth and lubricated surface for bone movement is cartilage.

Detailed explanation-2: -Bone is not uniformly solid, but consists of a flexible matrix (about 30%) and bound minerals (about 70%) which are intricately woven and endlessly remodeled by a group of specialized bone cells. Their unique composition and design allows bones to be relatively hard and strong, while remaining lightweight.

Detailed explanation-3: -The outer surface of bone is called the periosteum (say: pare-ee-OSS-tee-um). It’s a thin, dense membrane that contains nerves and blood vessels that nourish the bone. The next layer is made up of compact bone. This part is smooth and very hard.

Detailed explanation-4: -Hyaline cartilage at the ends of your bones is sometimes referred to as articular cartilage. Hyaline cartilage is slippery and smooth which helps your bones move smoothly past each other in your joints. It’s flexible but strong enough to help your joints hold their shape.