NURSING EXAM QUESTIONS
PATHOLOGY AND GENETICS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
Excessive scarring
|
|
ulcers
|
|
Either A or B
|
|
None of the above
|
Detailed explanation-1: -Keloids are dermal tumor characterized by excessive accumulation of collagen. The key cell responsible for matrix production in activated myofibroblast. A number of growth factors, particularly TGF-, play a role in excessive collagen production.
Detailed explanation-2: -As a wound closes, skin cells create collagen, which forms the building blocks of a scar. Scar tissue is stiff and inflexible, and excessive collagen production can result in scarring that impedes movement or facial expression, as when a scar covers the elbow or the face.
Detailed explanation-3: -A keloid scar is an overgrowth of tissue that happens when too much collagen is produced at the site of a wound. The scar keeps growing, even after the wound has healed. Keloid scars are raised above the skin and can be pink, red, the same colour or darker than surrounding skin.
Detailed explanation-4: -Excessive scars form as a result of aberrations of physiologic wound healing and may develop following any insult to the deep dermis, including burn injury, lacerations, abrasions, surgery, piercings and vaccinations.
Detailed explanation-5: -Collagen plays many important roles throughout your body, including plumping up your skin and helping your cartilage protect your joints. When a scar develops, collagen fibers repair damaged skin and close any open areas. The new tissue protects you from infection.