PATHOLOGY MCQ
HEALING AND REPAIR
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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macrophages
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phagocytes
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leukocytes
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fibroblasts
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Detailed explanation-1: -Scarring, which develops due to fibroblast activation and excessive extracellular matrix deposition, can cause physical, psychological, and cosmetic problems. Fibroblasts are the main type of connective tissue cells and play important roles in wound healing.
Detailed explanation-2: -In addition to the secretion of the extracellular matrix, fibroblasts and myofibroblasts secrete extracellular matrix remodeling enzymes, matrix metalloproteinases and their inhibitors, and tissue inhibitors of metalloproteinases and are thus able to remodel the extracellular matrix.
Detailed explanation-3: -Fibrous tissue that forms when normal tissue is destroyed by disease, injury, or surgery. For example, scar tissue forms when a wound heals after a cut, sore, burn, or other skin condition, or when an incision (cut) is made into the skin during surgery.
Detailed explanation-4: -Scars form as part of the healing process after your skin has been cut or damaged. The skin repairs itself by growing new tissue to pull together the wound and fill in any gaps caused by the injury. Scar tissue is made primarily of a protein called collagen. Scars develop in all shapes and sizes.
Detailed explanation-5: -Type I and type III are the primary types of collagen that make up scar tissue. During the proliferative phase of wound healing, cells surrounding the injured skin begin multiplying rapidly.