American Academy of Professional Coders (AAPC) Practice Exam

What type of connective tissue is included in the subcutaneous layer?

1. Reticular Fascia

2. Superficial Fascia

3. Dense Regular Connective Tissue

4. Stratified Connective Tissue

The correct answer is: Superficial Fascia

The subcutaneous layer, also known as the hypodermis or superficial fascia, primarily consists of loose connective tissue and fat tissue. This layer acts as a cushion, providing insulation and support to the underlying structures, such as muscles and bones. It allows for the movement of the skin over these underlying structures and serves a critical role in the body's thermal regulation and energy storage. Superficial fascia not only anchors the skin but also contains blood vessels and nerves that supply the skin, combining both connective tissue and adipose tissue for functionality and protection. The presence of elastic fibers in this layer allows for flexibility and movement, distinguishing it as the primary type of connective tissue in the subcutaneous layer. In contrast, reticular fascia mainly refers to a network of connective tissue that supports and surrounds organs, while dense regular connective tissue is structured to provide tensile strength, found in tendons and ligaments, and stratified connective tissue is not a recognized classification within standard anatomical references. Understanding the specific roles and structures of these connective tissues highlights why superficial fascia is the appropriate answer in this context.