Why does skin heal after wounds?

Answer: Cells multiply to fill gaps

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.

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!