Nursing 247 exam 2 Questions With Complete Solutions

Skin correct answer: Largest organ in the body Guards against environment stresses, adapts to environmental influences. Has 2 layers epidermis and dermis Epidermis correct answer: Thin, but tough. Completely replaced every 4 weeks Avascular. Cells (dead) are bound together to make protective sheets. Basal cell layer forms new skin cells like Keratin, Melanocytes (color), and Horny cell layer (dead cell layer) Dermis correct answer: Inner supportive layer made up of Collagen. Resilient elastic tissue. Contains nerves, sensory receptors, blood vessels and lymphatics. Also hair follicles, sebaceous glands, sweat glands Subcutaneous layer correct answer: adipose tissue (temperature and cushioning) Hair correct answer: made of keratin Sebaceous glands correct answer: produce sebum (protective for hair follicles and skin) Sweat glands correct answer: Regulates temperature. Eccrine and apocrine (in adolescents) Nails correct answer: hard plates of keratin Protection Prevents penetration Perception Temperature regulation Identification Communication Wound repair Absorption and excretion Production of vitamin D correct answer: What are the functions of the skin? Lanugo correct answer: Hair on body of an infant that will fall out