Transcript Skin
Skin Pore Hair Follicle, Oil Gland Epidermis Dermis Arrector Muscle Sweat Gland Subcutaneous Layer (Fat) Sensory Nerves Arteries and Veins Skin Dermatology Acne • Acne Warts • Caused by virus • Contagious • OTC Meds/Prescription drugs Ringworm Caused by fungus Dry, itchy circles on skin Contagious OTC Meds, Prescription drugs Athlete’s Foot • • • • Caused by fungus Can be contagious Thrive in warm, moist conditions OTC meds/prescription Bumps and Bruises • Caused by blows to skin or internal injury • Damaged tissue • Treat with I.C.E. • Treat with heat Contact Dermatitis • Leaves of three… Let it be. Sunburn/Burns • 1st degree: red, tender/painful to touch • 2nd degree: red, blistered, painful • 3rd degree: charred tissue, very painful, emergency situation 1st degree burn 2nd degree burn 3rd degree burn Skin Cancer 1. A sore that will not heal 2. A change in size or color of wart or mole Untreated Skin Cancer General Rules for Prevention of Skin Cancer • • • • • • • Keep covered when outdoors Use sunscreen ….at least spf 30 Avoid hottest times of day when possible Wear a big hat to protect face, neck, and head Use sunscreen!!!! Check body for changes on skin surface Don’t think…”It won’t happen to me”. Skin cancer is the most common type of cancer that people get. Toooo much sun! The Body’s Tough Covering The skin performs several major functions: 1. It covers the body and prevents the loss of water 2. It protects the body from injury and infection. 3. It helps regulate body temperature, eliminate wastes, and gather information about the environment. 4. It makes vitamin D. This occurs when skin is exposed to ultraviolet rays Protection • The skin covers the body and provides a protective barrier that protects the underlying tissues from: • • • • Physical abrasion Bacterial and viral invasion Dehydration Ultraviolet (UV) radiation • Hair and nails also have protective functions. Body Temperature and Homeostasis • Evaporation of water from the skin surface helps lower an elevated body temperature to normal. • Changes in the flow of blood to the skin also help regulate body temperature. Sensation • The skin contains abundant nerve endings and receptors that detect stimuli related to temperature, touch, pressure, and pain. • The smallest stretching of a cell membrane on our fingertip is transmitted as a cellular signal to our brains. Excretion • Besides removing heat and some water from the body, sweat is also a vehicle for the excretion of a small amount of salt and several organic compounds (fats and proteins) Vitamin D • Vitamin D is created when molecules in the skin are activated by UV rays in the sunlight. • Vitamin D contributes to digestion by helping digestive system absorb calcium from food. Skin Structure • The structure of skin consists of two main layers, the epidermis and the dermis. • Beneath the dermis is a layer of subcutaneous tissue (fat), sometimes called the hypodermis. Skin Health • Keep it clean. Bathe regularly, especially after physical activity. • Body odor changes during adolescence due to release of hormones during puberty. Others notice! • Eat a proper diet. Less junk foods, more food that is full of good nutrients. • Drink plenty of water • Exercise regularly • Get plenty of sleep