Laser Technician (International Board of Electrologist Certification) IBEC Board Exam

Which layer of skin acts as a shock absorber for underlying structures?

1. Dermis

2. Epidermis

3. Hypodermis

4. Stratum Spinosum

The correct answer is: Hypodermis

The hypodermis, also known as the subcutaneous layer, plays a critical role in acting as a shock absorber for the underlying structures of the body. This layer is composed mainly of loose connective tissue and fat, providing insulation and protection. Its fatty tissue cushions the organs and muscles beneath it, absorbing impacts and stresses that might otherwise cause injury. Additionally, the hypodermis helps to anchor the skin to the underlying tissues, allowing for mobility while still providing stability. The other layers of skin, such as the epidermis and dermis, have different functions. The epidermis serves as the primary barrier against environmental elements and is responsible for the creation of new skin cells and the production of melanin. The dermis contains connective tissues, blood vessels, and nerve endings but is primarily involved in supporting and nourishing the epidermis, rather than providing the shock-absorbing function that is characteristic of the hypodermis. The stratum spinosum is a layer within the epidermis, specifically involved in providing structural support and play a role in the immune response, but it does not offer the cushioning required for protection against shocks.