Diseases and Disorders of the Integumentary System

Question 1

Leading cause to skin cancer?

Answer 1

excessive exposure to sunlight.
Fair-skinned people and elderly are more susceptible
1 in 5 people develop skin cancer.

Question 2

Basal cell carcinoma (type of skin cancer)

Answer 2

most common type but least dangerous

when the tumor arises from pre-cancerous cells in the stratum basale, but rarely metastasize.

Question 3

Squamous cell carcinoma (type of skin cancer)

Answer 3

less common and will metastasize in neglected.
when tumors arise from keratinocytes in the stratum spinosum of scalp, ears, or back of hand. often from pre-existing skin lesions on sun-damaged skin.

Question 4

Malignant melanoma (type of skin cancer)

Answer 4

least common but metastasizes quickly but can be fatal.
most life-threatening cancer among young women
the tumors arise from malignant melanocytes pre-existing mole.

Question 5

What are some early detection one can have?

Answer 5

asymmetry of mole.
irregular border of mole
uneven and multiple coloration
diameter greater than 1/4 inch.

Question 6

Risk factors for skin cancer.

Answer 6

1. people with fair skin who burn more than tan
2. excessive exposure to sunlight, and frequent occurrences of severe sunburn.
3. family history of skin cancer.
4. people who have a suppressed immune system

Question 7

describe a first degree burn.

Answer 7

characterized by redness, and pain in the surface epidermis.
few days of healing.
for sunburns are this degree.
both UVB and UVA

Question 8

describe Second degree burn.

Answer 8

destroys the entire epidermis and atleast parts of the dermis.

• redness, blister formation, fluid accumulation and pain
• healing takes several weeks.

Question 9

describe third degree burn.

Answer 9

destroys epidermis, dermis and eve parts of the hypodermis. least painful .

1. loss of sensory nerve endings
2. excessive fluid loss can lead to massive infection.
3. regeneration is slow-grafting might be necessary. considerable scarring may occur.