Final answer:
Collagen X is found in the zone of calcified matrix of the physis and assists in bone formation by facilitating the connection between the epiphyseal plate and the diaphysis as well as the deposition of minerals.
Step-by-step explanation:
Collagen X is located in the zone of calcified matrix of the physis, also known as the epiphyseal plate, which is closest to the diaphyseal end of growing bones. It plays a critical role in bone formation and contributes to the longitudinal growth of bones by connecting the epiphyseal plate to the diaphysis.
This type of collagen is part of the mineralized connective tissue within bone, and its function includes maintenance of the integrity of bone matrix and facilitating the calcification process within the physis. The process of hydroxylation of proline to hydroxyproline, which requires vitamin C, is crucial in collagen synthesis. Hydroxyproline is an important constituent of collagen, providing strength and stability to the collagen triple helix structure.
Furthermore, osteoblasts are responsible for the secretion of collagen and non-collagen proteins to form the organic matrix of the bone, and collagen X aids these cells during bone remodeling by providing a framework for the deposition of minerals like calcium and phosphate to form hydroxyapatite, which strengthens bone structure.