02-08-2014, 04:07 PM
NBME Q
A study is conducted of nerve regeneration after injury in an experimental animal. A nerve guidance conduit is placed within a 4mm gap of a severed nerve. The conduit, filled with a keratin gel extracted from human hair, if sound to enhance visible nerve regeneration across the gap. Microscopic examination of the regeneration site after initial exposure to the keratin gel would most likely show mitotic activity in which of the following cells?
a.) fibroblasts
b.) undifferentiated stem cells
c.) neurons
d.) plasma cells
e.) schwann cells
f.) macrophages
A study is conducted of nerve regeneration after injury in an experimental animal. A nerve guidance conduit is placed within a 4mm gap of a severed nerve. The conduit, filled with a keratin gel extracted from human hair, if sound to enhance visible nerve regeneration across the gap. Microscopic examination of the regeneration site after initial exposure to the keratin gel would most likely show mitotic activity in which of the following cells?
a.) fibroblasts
b.) undifferentiated stem cells
c.) neurons
d.) plasma cells
e.) schwann cells
f.) macrophages