Question

part c assessments
complete the following:

1. distinguish the locations and tissues among the epidermis, dermis, and subcutaneous layer.
2. how do the cells of stratum corneum and stratum basale differ?
3. state the specific location of melanin observed in dark (heavily pigmented) skin.
4. what special qualities, due to the presence of fibers, does the connective tissue of the dermis have?

Explanation:

1. The epidermis is the outermost layer, made of epithelial tissue. The dermis is beneath the epidermis, composed of connective tissue. The subcutaneous layer is below the dermis, mainly adipose tissue.
2. Cells of the stratum corneum are dead, flattened, and keratin - filled for protection. Cells of the stratum basale are living, cuboidal, and capable of cell division.
3. In dark (heavily pigmented) skin, melanin is mainly found in the melanocytes of the stratum basale of the epidermis.
4. The connective tissue of the dermis, due to the presence of collagen and elastic fibers, has qualities of strength, extensibility, and elasticity.

Answer:

1. Epidermis: Outermost, epithelial tissue; Dermis: Beneath epidermis, connective tissue; Subcutaneous layer: Below dermis, adipose tissue.
2. Stratum corneum: Dead, flattened, keratin - filled; Stratum basale: Living, cuboidal, dividing.
3. In melanocytes of stratum basale of epidermis.
4. Strength, extensibility, elasticity.