s50
sudha2015 - 10-19-11 04:39

A 24-year-old delivery driver is involved in an accident and sustains
a wide abrasion over his left elbow. The abrasion results in the total
loss of epidermis over a large area of his left arm, but one month
later, the abrasion has healed, with regrowth of the epidermis.
Which of the following mechanisms accounts for the restoration
of the epidermis over the abraded area?
A. Growth of epidermis from hair follicles and sweat glands in the dermis
B. Migration of endothelial cells from newly grown capillaries
C. Transformation of dermal fibroblasts into epidermal cells
D. Transformation of macrophages into epidermal cells
E. Transformation of melanocytes into epidermal cells