During remodeling, which statement best describes the relationship between capillary changes and collagen restructuring?

During remodeling, which statement best describes the relationship between capillary changes and collagen restructuring?

• A. Capillary arcade collapses
• B. Capillary architecture remains unchanged
• C. Collagen becomes denser but capillaries increase
• D. Capillaries regress while collagen loosens

Answer: (A)

As remodeling proceeds, the tissue shifts from a loosely organized, highly vascular matrix to a denser, well-aligned collagen network that provides greater tensile strength. As collagen fibers become cross-linked and realign along tension lines, the surrounding matrix contracts and the capillary network loses support, leading to pruning and collapse of the capillary arcade. This reflects the normal pattern where blood vessels regress as the scar matures and requires less perfusion, while collagen becomes stronger and more organized. Other patterns don’t fit because remodeling typically involves reduction of capillaries (not maintenance or increase) and tightening, not loosening, of the collagen structure.

As remodeling proceeds, the tissue shifts from a loosely organized, highly vascular matrix to a denser, well-aligned collagen network that provides greater tensile strength. As collagen fibers become cross-linked and realign along tension lines, the surrounding matrix contracts and the capillary network loses support, leading to pruning and collapse of the capillary arcade. This reflects the normal pattern where blood vessels regress as the scar matures and requires less perfusion, while collagen becomes stronger and more organized.

Other patterns don’t fit because remodeling typically involves reduction of capillaries (not maintenance or increase) and tightening, not loosening, of the collagen structure.