Illinois Nail Technician Practice Exam

What are the primary layers of the skin?

1. Epidermis, dermis, and hypodermis

2. Stratum corneum, stratum granulosum, and dermis

3. Epidermis, stratum, and subcutaneous

4. Epidermis, dermis, and subcutaneous fatty tissue

The correct answer is: Epidermis, dermis, and subcutaneous fatty tissue

The primary layers of the skin consist of the epidermis, dermis, and subcutaneous fatty tissue, making this choice a comprehensive and accurate representation of skin structure. The epidermis is the outermost layer of skin that provides a protective barrier and is responsible for the skin's tone and texture. It consists of several sub-layers, including the stratum corneum and stratum granulosum. The dermis lies beneath the epidermis and contains connective tissues, blood vessels, and nerve endings, playing a critical role in the skin's strength and elasticity. It houses various structures, such as hair follicles and glands. Subcutaneous fatty tissue, also known as the hypodermis, is the innermost layer and is responsible for insulation, energy storage, and cushioning for the underlying muscles and bones. It also helps anchor the skin to the underlying structures. Other options, while mentioning components of the skin, do not capture the full representation of its primary layers. Some options only focus on specific sub-layers or incorrectly name layers, leading to an incomplete understanding of skin anatomy.