MICROANATOMY

Detailed explanation-1: -Collagen molecules consist of three intertwining spiral chains, allowing the molecules themselves to bend and stretch.

Detailed explanation-2: -While the fibers themselves do not stretch, their lattice-like arrangement can allow tissues containing the fibers to stretch to some extent. Thus, collagen fibers impart both strength and flexibility to tissue.

Detailed explanation-3: -Bone matrix is a composite consisting of organic and inorganic components. The organic matrix makes up  20% of bone wet weight and is comprised primarily of type I collagen which gives bone its flexibility.

Detailed explanation-4: -Collagen fibers are composed of tropocollagen subunits whose -chain amino acid sequences permit the classification of collagen into at least 30 different fiber types. The capability of the ECM to withstand compressive forces is due to the presence of the hydrated matrix formed by GAGs and proteoglycans.