Why do cuts bleed then stop?
Show answer & explanation
Answer: Blood clots seal the wound
Blood clots seal the wound ✓ — Correct! Platelets rush to wounds and stick together, forming a plug. Then proteins create fibrin threads that weave a stronger clot. This amazing process happens in minutes to prevent blood loss!
Skin grows back instantly — Wrong. Skin takes days to heal fully. Bleeding stops because blood clots form, not because skin regrows.
Air pressure stops flow — Wrong. Air pressure doesn't stop bleeding. The body's internal clotting system seals wounds.