NURS 3120 Lecture Notes - Lecture 3: Hypertrophy, Palpation, Facial Hair
Document Summary
Our skin is a body organ, structurally intact covers entire body. Our skin protects us and our internal organs. Assists with body fluid & electrolyte balancing. Epidermis: outermost layer, is avascular, new cells push old cells up to skin surface where keratinization occurs (cells die, making them hard & waterproof) Dermal blood supply feeds epidermis, contains the nerves for touch/pain/temperature & allows our skin to stretch or contract with movement or changes in temperature. Sq/hypodermis: this layer supports our epidermis & dermis. Composed of loose connective tissue with sq fat. Our fatty cells assist us with heat retainment, as a cushion and caloric source. Our melanocytes provide the color of our hair. Epidermal cells which are converted to keratin. Nails have a free edge, plate & root. Lunula white crescent shape at end of nails. Cuticles grow on nail plate at the base of the nail. Regulates body temperature by water secretion through our skin.
