What is the main component increased during the proliferation phase?

What is the main component increased during the proliferation phase?

• A. Fibroblast activity
• B. Necrosis
• C. Angiogenesis
• D. Inflammation resolution

Answer: (A)

In the proliferation phase, tissue rebuilding is driven by fibroblasts. These cells migrate into the wound, proliferate, and produce extracellular matrix components, especially collagen, which forms the new connective tissue matrix and granulation tissue that fills the wound. This collagen deposition is what rebuilds the tissue scaffold and supports later remodeling. Angiogenesis does occur during this phase to supply blood and nutrients, but the defining activity is the fibroblasts’ synthesis of collagen and matrix that builds the new tissue. Necrosis would indicate ongoing tissue damage rather than the constructive processes of proliferation, and inflammation resolution is part of moving away from the inflammatory phase, not the primary driver of tissue synthesis. Therefore, fibroblast activity best captures what increases during this stage.

In the proliferation phase, tissue rebuilding is driven by fibroblasts. These cells migrate into the wound, proliferate, and produce extracellular matrix components, especially collagen, which forms the new connective tissue matrix and granulation tissue that fills the wound. This collagen deposition is what rebuilds the tissue scaffold and supports later remodeling. Angiogenesis does occur during this phase to supply blood and nutrients, but the defining activity is the fibroblasts’ synthesis of collagen and matrix that builds the new tissue. Necrosis would indicate ongoing tissue damage rather than the constructive processes of proliferation, and inflammation resolution is part of moving away from the inflammatory phase, not the primary driver of tissue synthesis. Therefore, fibroblast activity best captures what increases during this stage.