As we age, our skin wrinkles due to changes in collagen and elastic fibers in the dermis and a decrease in their production. Explain why topical application of collagen and elastic fibers would not eliminate wrinkles.

Define cutaneous membrane and accessory organs of the integument. List the structures that belong to each of these divisions of the integumentary system.

Explain it asap

The healing of burns and epidermal regeneration is usually uneventful unless the burn is a third-degree burn. What accounts for this difference?

Why are melanomas the most common type of skin cancer to metastasize? (Recall that melanocytes are formed from neural crest tissue, an embryonic tissue that wanders extensively during early development.)

Keratinocytes are the major cellular components of the epidermis. They are found in the four major epidermal strata: basale, spinosum, granulosum and corneum. Explain the characteristics of and the changes in the keratinocytes as they journey from the deepest to the most superficial epidermal strata.

Nails are nonliving material. Why, then, do they appear pink? O All of these contribute to the pink color. There is a very rich blood supply just underneath them in the dermis. Dead blood cells in the keratinized cells look pink. As they die, the pigments in the epidermal cells take on a pink color.

The layer of the epidermis in which cells begin the process of keratinization is the a. stratum corneum. b. stratum basale. c. stratum lucidum. d. stratum granulosum.

Epidermal abrasions of the right arm and shoulder Severe lacerations of the right cheek and temple What protective mechanisms are impaired or deficient in the abraded areas?