Identify the different portions (a–d) of the cutaneous membrane and the underlying layer of loose connective tissue (e) in the diagram to the right.
c. ____

검증된 단계별 안내

Step 1: Understand the layers of the cutaneous membrane. The cutaneous membrane consists of the epidermis (a), dermis (b and c), and the underlying layer of loose connective tissue (e) called the hypodermis or subcutaneous layer.

Step 2: Identify the labeled portions in the diagram. Portion 'a' corresponds to the epidermis, which is the outermost layer composed mainly of stratified squamous epithelium.

Step 3: Portion 'b' is the papillary layer of the dermis, which is the upper part of the dermis containing loose connective tissue and capillaries.

Step 4: Portion 'c' is the reticular layer of the dermis, which is the deeper, thicker part of the dermis composed of dense irregular connective tissue.

Step 5: Portion 'e' is the hypodermis or subcutaneous layer, which lies beneath the dermis and consists mainly of loose connective tissue and adipose tissue.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Epidermis

The epidermis is the outermost layer of the skin, composed mainly of keratinized stratified squamous epithelium. It serves as a protective barrier against environmental damage, pathogens, and water loss. This layer is avascular and relies on diffusion from underlying layers for nutrients.

Dermis

The dermis lies beneath the epidermis and is a thick layer of connective tissue containing collagen and elastin fibers. It houses blood vessels, nerves, hair follicles, and glands, providing structural support and nourishment to the epidermis. The dermis is divided into the papillary and reticular layers.

Hypodermis (Subcutaneous Layer)

The hypodermis, or subcutaneous layer, is composed mainly of loose connective tissue and adipose tissue. It acts as an insulator, shock absorber, and energy reserve, anchoring the skin to underlying muscles and bones. This layer contains larger blood vessels and nerves that supply the skin.

Identify the different portions (a–d) of the cutaneous membrane and the underlying layer of loose connective tissue (e) in the diagram to the right.c. ____