Which cell type is the principal resident cell of dense connective tissue?

Which cell type is the principal resident cell of dense connective tissue?

• A. Fibroblast
• B. Macrophage
• C. Osteoblast
• D. Mast cell

Answer: (A)

Fibroblasts are the cells that maintain and synthesize the extracellular matrix in connective tissue proper, and in dense connective tissue they are the principal resident cells. Their main role is to produce collagen fibers (primarily type I) and other matrix components that give dense tissue its strength and structure. In dense connective tissue, these spindle-shaped cells are the most common resident cells and are aligned with the collagen fibers to support the tissue’s load-bearing properties. They can become more active in wound healing as myofibroblasts, helping contract and remodel the matrix. Other cells listed, like macrophages, are immune cells that reside in tissue but are not the primary matrix-producing residents, osteoblasts form bone, and mast cells are involved in inflammatory responses rather than forming the dense ECM.

Fibroblasts are the cells that maintain and synthesize the extracellular matrix in connective tissue proper, and in dense connective tissue they are the principal resident cells. Their main role is to produce collagen fibers (primarily type I) and other matrix components that give dense tissue its strength and structure. In dense connective tissue, these spindle-shaped cells are the most common resident cells and are aligned with the collagen fibers to support the tissue’s load-bearing properties. They can become more active in wound healing as myofibroblasts, helping contract and remodel the matrix. Other cells listed, like macrophages, are immune cells that reside in tissue but are not the primary matrix-producing residents, osteoblasts form bone, and mast cells are involved in inflammatory responses rather than forming the dense ECM.