Galen Anatomy and Physiology (A&P) 1 Theory Exam 2 Practice

Wound healing follows a sequence where the body first cleans and prepares the site, then restores the barrier, builds new tissue, and finally remodels the repair into a scar. Immediately after injury, the inflammatory phase kicks in to control bleeding, remove debris, and fight infection. Next comes the migratory phase, where epithelial cells at the wound edges begin to move across the wound bed to reestablish the protective barrier. After the wound is covered, the proliferative phase drives tissue formation—fibroblasts lay down collagen, granulation tissue forms, and new blood vessels grow to supply the area. Finally, the scarring phase remodels the new tissue, aligning and strengthening collagen to produce a more stable scar.

Putting those steps in this order makes sense because each stage builds on the previous one: cleanup and signaling set the stage for cover by new epithelium, which then enables robust tissue formation and eventual remodeling. If scarring occurred before epithelial migration or before proliferation, the wound wouldn’t be properly covered and rebuilt, which isn’t how the repair process unfolds. Similarly, starting with epithelial migration before inflammation would skip the necessary cleanup and signaling that prepare the wound bed.