Dermatology study of the skin..its structure, functions,diseases and treatments Skin largest organ of the body Barrier against the enviornment your skin Where is the thinest skin on our body eyelids Where is the thickest skin on our body the soles of the feet Epidermis the outer most layer of the skin. it contains no blood vessels but has many small nerve endings Basil cell layer stratum germinativum...the deepest layer of the epidermis Melanocytes cells that produce a dark skin pigment called melanin Stratum Granulosum layer that has cells that look like granules. these cells are almost dead, are pushed to the surface to replace cells that shed from the surface layer Stratum Corneum horny layer. outer layer of he epidermis Stratum Lucidum clear layer, just under the skin surface Cells are made up of what keratin, a fiber protein that is the main component of hair and nails Dermis deepest,underlying or inner layer of the skin,it is 25 times thicker than the epidermis. It is a highly sensitive layer of connective tissue. This layer has blood and lympgh vessels,nerves,sweat and oil glands,hair follicles and arrector pili muscles(the goose bump muscles) Arrector pili muscles work inconnection with the hair follicles and cause goose bumps Papillary layer outer layer of the Dermis,directly beneath the epidermis. this layer also contains melanocytes(the pigment producing cells) and is responsible for providing the body with a sense of touch. nerve endings are most abundant in the finger tips Reticular layer deeper layer of the dermis that supplies the skin with oxygen and nutrients,this feeds the skin How is the skin nourished through blood,it supplies nutrients and oxygen to he skin The nerves of the skin are what motor nerve fibers,sensory nerve fibers,secretory nerve fibers Motor nerves distributed to arrector pili muscles..causes goose bumps Sensory nerves react to heat,cold,touch,pressure,pain these recptors send messages to the brain Secretory nerves distributed to sweat and oil glands regulatessweat sebum and body temperature Sensory nerve endings are most abundant where in the finger tips What determines skin color melanin What gives skin its strength,form and flexability collagen and elastin(flexable protein fibers found in the dermis) Collagen a fibrous protein that gives strength and form Elastin protein base that is similar to collagen that forms elastic tissue What are the two types of duct glands sudoriferous(sweat glands) and sebaceous(oil glands) Where are sudoriferous glands more numerous the palms of the hand,soles of the feet,forehead and arm pits What regulates body temperature sweat glands What part of the body does not have susebceous glands(oil Glands) palms of the hands and soles of the feet What are the 6 functions of the skin protection,sensaton,heat regulation,excretion,secretion,absorbtion What greatly influences the aging process of the skin sun,enviornment,health,lifestyle What has the greatest impact on how our skin ages the sun and its uv rays What are the 2 different types of uv rays UVA and UVB To help protect the skin from uv rays you should do what avoid extended exposure to the sun during peek hours which are 10am-3pm Which layer of the skin has stratum spinosum,licidum,corneum epidermis How do the sudoriferous and sebacous glands work they extract materials from the blood to form new substances The two types nof pigment are what pheomelanin,eumelanin Wheal itchy,swollen lesion that lasts for only a few hours(insect bite or hives) Bula large blister containing watery fluid Contact dermatitis most common skin disease for nail techs. How do you get contact dermatitis over exposed to to a sensitizing nail product Fissure crack in the skin that penitrates the dermis like chapped hands or lips Keloid thick scar resulting from excessive growth of fobrous tissue Scale thin plate of epidermal flakes (dandruff or dryness) Keratoma thickened patch of skin commonly know as a callus Dermatitis inflamatory condition of the skin,alergic reaction Eczema inflamatory painful itchy disease of the skin (not contagious) Psoriasis skin disease red patches coverd with silver-white scales,found usually on the chest,elbows,knees,scalp. caused by skin cells turning over to quickly(not contagious) Vitamin A supports the over all health of the skin(also a form of Retinoic acid in cream form) Nails/SKIN STRUCTURE & GROWTH
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