People who have been trapped in an avalanche or fallen though ice often lose their nose, fingers, and toes. Why does this happen?
- The blood freezes in these areas, causing the tissue to die.
- In extreme cold, the blood is directed to the vital organs in the trunk of the body and around the brain.
- The skin is thinner in these areas and does not sufficiently protect against the cold.
- Only veins are located in these areas and most of the heat from the body core has already been distributed by the time the blood arrives to these extremities.