Which of the following cell types would one not expect to find in the dermis of the skin?

• A. Chondrocytes
• B. Fibroblasts
• C. Melanocytes
• D. Keratinocytes

Answer: (A)

Verified step by step guidance

1. Understand the structure and function of the dermis: The dermis is the middle layer of the skin, located beneath the epidermis. It contains connective tissue, blood vessels, nerve endings, and various cell types that contribute to skin strength, elasticity, and repair.
2. Review the role of fibroblasts: Fibroblasts are common cells in the dermis responsible for producing collagen and extracellular matrix, which provide structural support to the skin.
3. Examine the role of melanocytes: Melanocytes are pigment-producing cells primarily found in the epidermis, not the dermis. They produce melanin, which gives skin its color and protects against UV radiation.
4. Analyze the role of keratinocytes: Keratinocytes are the predominant cell type in the epidermis, responsible for producing keratin, a protein that strengthens the skin and forms a protective barrier. They are not typically found in the dermis.
5. Consider the role of chondrocytes: Chondrocytes are specialized cells found in cartilage, not in the skin. Since the dermis does not contain cartilage, chondrocytes would not be expected to be present in this layer.