Which cell type is primarily responsible for producing new epidermal cells during wound healing in the integumentary system?

• A. Adipocytes
• B. Keratinocytes
• C. Melanocytes
• D. Langerhans cells

Answer: (B)

Verified step by step guidance

1. Understand the role of the integumentary system in wound healing. The integumentary system includes the skin, which is composed of multiple layers: epidermis, dermis, and hypodermis. The epidermis is the outermost layer and is responsible for producing new cells during wound healing.
2. Identify the cell types listed in the problem: Adipocytes, Keratinocytes, Melanocytes, and Langerhans cells. Each of these cell types has a specific function within the body.
3. Review the function of keratinocytes. Keratinocytes are the primary cell type in the epidermis and are responsible for producing keratin, a protein that provides strength and protection to the skin. During wound healing, keratinocytes proliferate and migrate to cover the wound and regenerate the epidermis.
4. Compare the functions of the other cell types: Adipocytes are fat cells found in the hypodermis, not the epidermis. Melanocytes produce melanin, which gives skin its pigment but does not play a primary role in wound healing. Langerhans cells are immune cells in the epidermis that help fight infections but are not responsible for producing new epidermal cells.
5. Conclude that keratinocytes are the cell type primarily responsible for producing new epidermal cells during wound healing in the integumentary system.