preview

Ehsm 5163 Week 7 Assignment

Decent Essays

OLANREWAJU VICTOR FADARE
EHSM 5163
Week 7 Assignment

Question 1
A. Ans
• The outermost layer of the epidermis is known as the stratum corneum, it is water resistant and when not damaged, it protects the body from foreign substances such as bacteria, virus etc. it also ensures the protection of muscles, blood vessels, nerves and internal organs. The skin is also thicker in regions that requires more protection such as the sole of the feet and palms.
• It protects the body from ultraviolent rays from the sun due to the presence of melanin from melanocytes. This radiation can damage the DNA and lead to diseases such as cancer
B. Ans
• The dermis contains elastic and fibrous tissues such as fibrillin, collagen and elastin. These tissues gives …show more content…

Question 2. A. Ans
• Contact dermatitis occurs when the skin comes in direct contact with a substance, it causes the skin itching and skin inflammation in a particular region. B. Ans
• Irritant contact dermatitis occurs when the skin is damaged due to direct contact with chemical substances such as alkalis, acid, solvents etc. this is the most common type of contact dermatitis. People vary in sensitivity that is, some may react after a single exposure, while others maybe after several exposures and some may develop tolerance to the chemical substance over a period of time.
C. Ans
• Allergic contact dermatitis occurs when a person’s body immune system is sensitive to a substance, it causes an immune skin reaction. These substances include poison ivy, antibiotics, nickel (up to 10% of women are allergic to it) etc. allergic contact dermatitis develops over a period and once the person is allergic to a substance, the slightest contact amount causes reaction.

D. …show more content…

These substances includes aftershave lotions, coal tar, sunscreens etc.
• Contact dermatitis causes rash and itching. The itching is usually more when allergic but the rash depends on the level of reaction from mild to severe swellings. These rash affects only the areas in contact and can spread to other areas.
• Touching the blister fluid and rash would not affect other body parts or people that fail to come in contact with the substance.
• Irritant contact dermatitis causes more pain than itch as it causes direct damage to the skin
• Body fluids such as urine and saliva can cause irritation contact dermatitis to the skin

Question 3.
Ans
Psoriasis: This is a common, chronic and recurring skin disorder that changes and alters the life cycle of skin cells. It causes cells to accumulate quickly on the skin surface. The extra cells from the skin forms a thick, itchy, silvery scale and a red patch. It can appear at any part of the body such as the knee, scalp, elbow etc. it is treated with drugs applied to the skin, ingested and with ultraviolet radiation. This disease has affected about 1%-5% of the world population and it is more common to the light skinned people. Psoriasis may persist throughout a person’s life as it comes and goes but it is usually reduced during the summer period when the skin is exposed to ultraviolent radiation and flare ups are common during

Get Access