Why does skin heal after wounds?

Answer: Cells multiply to fill gaps

Cells multiply to fill gaps ✓ — Correct! Skin cells at wound edges divide and migrate to close the gap. Special cells called fibroblasts produce collagen to rebuild tissue. For small wounds, skin regenerates almost perfectly!

Blood creates new skin — Wrong. Blood forms clots for protection but doesn't transform into skin. New skin grows from existing skin cells.

Scabs become new skin — Wrong. Scabs protect healing skin but don't become it. New skin forms underneath, and scabs eventually fall off.