GENERAL HISTOLOGY

Detailed explanation-1: -Collagen fiber is the fiber in the extracellular matrix of connective tissues characterized by being elongated and made up of collagen glycoproteins. It is typically arranged in branching bundles of indefinite length. It is a strong insoluble fiber. It occurs in the skin, tendon, ligaments, bone, and cartilage.

Detailed explanation-2: -In biology, the extracellular matrix (ECM), also called intercellular matrix, is a three-dimensional network consisting of extracellular macromolecules and minerals, such as collagen, enzymes, glycoproteins and hydroxyapatite that provide structural and biochemical support to surrounding cells.

Detailed explanation-3: -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.

Detailed explanation-4: -types of collagen found in the body. of matrix proteins in bone are collagen. The bone is more hard and dense than that of the cartilage because it has more collagen fibres in its matrix. Hence option C is the correct answer.