Question

Which of the following induces the epithelial cells below the scab to undergo mitosis?

• A. Epidermal growth factor
• B. Fibroblast growth factor
• C. Glial growth factor
• D. None of the above

Answer 1

The correct option is A Epidermal growth factor

• Scab is a collection of dried blood cells and serum and sits on top of the skin surface.
• The outermost layer of our skin is composed of epithelial cells. As wounds heal, epithelial cells regenerate across the wound surface from the edges to close the wound.
  
• The Epidermal growth factor induces the epithelial cells below the scab to undergo mitosis and facilitates closure of the wound.
• So, the correct answer is 'Epidermal growth factor'.