Question

in a penetrating wound, ______ divide to produce mobile cells that repair the dermis. muscle cells granulation cells dendritic cells macrophages fibroblasts

Explanation:

Fibroblasts are key cells in wound - healing. They divide and migrate to repair the dermis in a penetrating wound. Muscle cells are mainly for muscle - related functions, granulation cells are part of the granulation tissue but not the main cell type for dermal repair, dendritic cells are involved in immune responses, and macrophages are phagocytic cells for clearing debris.

Answer:

E. fibroblasts