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Suntans and Sunburns
A Case Study in the Integumentary System
By WH Cliff and AW Wright

A Painful Winter Break

On the first day after arriving in Australia for Christmas vacation, a University of Niagara student plays out in the sun for six hours. Later that night he notices that the skin on his trunk, legs and arms becomes red, swollen and extremely painful. By morning all of the afflicted areas have developed numerous blisters. These areas cover about 30% of the trunk (front and back) and 40% of the arms and legs.

1. What organ has been damaged? the skin

2. What general types of tissue have been afflicted?
the skin which is considered to be the epithelia and connective tissue . the sun denature cell protiens and cause cel death in the affected area.

3. What type of burn has the student received? Explain.

a thermal solar radiation burn characterized as a partial-thickness burn or second degree burn. A second degree burn involves the top layers of skin. The skin is red with blisters that may open and weep clear fluid, giving the skin a wet appearance. The area may also appear mottled. The burn is usually painful and often swells. This type of burn usually heals in 3-4 weeks, and scarring may occur(

4. What type of radiation has caused the burn?
A) Ultraviolet solar radiation (UVR) more specificUBA and UBV.

5. List ALL the layers of the skin that have been damaged?
A) the epidermis and the dermis

6. List ALL layers that have been killed?
A) epidermis

7. What tissue repair process causes the blistering?
A) fliud leaks into the area from blood vessels as a part of the lymphatic system in the inflammatory phase

8. Why is this type of burn so painful?
A) they are the most painful because nerve endings are intact, exposure of the nerves when the epidermis comes off.

A burn is considered critical and should receive prompt medical attention if:

> 25% of the body is covered by 2nd degree burns
> 10% of the body is...
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