Tarsal glands are:

• A. sensory receptors for touch in the dermis
• B. pigment-producing cells in the skin
• C. sweat glands found in the palms and soles
• D. sebaceous glands located in the eyelids that secrete an oily substance

Answer: (D)

Verified step by step guidance

1. Step 1: Begin by understanding the term 'tarsal glands.' These are specialized glands located in the eyelids, specifically along the edges of the eyelids.
2. Step 2: Recognize the function of tarsal glands. They are sebaceous glands, meaning they produce an oily substance called meibum. This secretion helps lubricate the surface of the eye and prevents the evaporation of tears.
3. Step 3: Differentiate tarsal glands from other types of glands in the body. For example, sweat glands (eccrine and apocrine) produce sweat, while pigment-producing cells (melanocytes) are responsible for melanin production in the skin. Tarsal glands are unique in their location and function.
4. Step 4: Understand the anatomical relevance of tarsal glands. They are part of the accessory structures of the eye and play a critical role in maintaining eye health by preventing dryness and irritation.
5. Step 5: Confirm the correct answer by matching the description provided: 'sebaceous glands located in the eyelids that secrete an oily substance.' This aligns with the function and location of tarsal glands.