Question

Why do people get frostbites??And how can I explain that in a way related to circulatory system?

Answer 1

Frostbite refers to the freezing of body tissue (usually skin) that results when the blood vessels contract, reducing blood flow and oxygen to the affected body parts.

Normal sensation is lost, and color changes also occur in these tissues.

Frostbite is most likely to affect body parts that are farther away from the body core and, therefore, have less blood flow. These include your feet, toes, hands, fingers, nose, and ears.

Frostbite is usually caused by prolonged exposure to cold temperatures, particularly if they are accompanied by a low wind-chill factor. It may also occur following more brief exposure to very cold temperatures.

Answer 2

Oh, and I got all that from http://www.webmd.com/first-aid/understanding-frostbite-basics