The 3 region of the skin, from superficial to deep
What is epidermis, the dermis and the hypodermis (subcutaneous layer)
100
The most numerous and widespread of the cutaneous receptors. Sensitive to light touch, light pressure, and temperature.
What is free nerve endings.
100
The small smooth muscle that attaches to the hair follicle contracts to raise the hair when we are cold or frightened.
What is air rector pili
100
This contagious skin disorder is generally referred to as 'tinea' infections. Tinea pedis, tinea cruris and tinea corporis
What is fungal infections
200
The 5 functions of the skin.
What is protection, absorption & excretion, synthesis of vitamin D, temperature regulation, general sensory organs
200
Like the Stratum Corneum, the cells of this layer are densely packed dead, flat and full of keratin. This layer is only found on areas with the thickest skin, palms, fingertips and soles of the feet.
What is stratum lucidum or glassy layer
200
Flat disc-shaped free nerve endings, also called tactile discs, are concentrated on fingertips, lips and genitalia. They are sensitive to light touch.
What is Merkel Discs
200
An autoimmune condition in which the body produces antibodies that destroy the melanocytes resulting in widespread patches of skin without pigment.
What is vitiligo
300
90% of epidermal cells are _______, that produce a tough water resistant substance. About 8% are ________, which give the skin color.
What is keratinocytes and melanocytes.
300
Cells actively replace their cytoplasm with keratin. It is named for the specialized granules in the keratinocytes that release a lipid secretion that gives them a water resistant quality.
What is stratum granulosum or granular layer.
300
Shaped like the end of a cotton swab, these are sensitive to light vibration. Like Merkel Discs, they are concentrated on the fingertips, lips and external genitalia.
What is Meissner Corpuscles
300
Sebaceous glands produce this.
What is oil or sebum
300
A burn that destroys the epidermis and dermis, including all accessory organs and glands.
What is 3rd degree burn.
400
The ABCD of malignant melanoma.
What is Asymmetry, Border, Color and Diameter
400
About 10 layers of cells, this layer contains specialized immune cells calls Langerhans cells that help protect the skin from for organisms that penetrate the more superficial epidermis
What is stratum spinosum or spiny layer
400
Egg shaped receptors, sensitive to high frequency vibration. Widely distributed throughout the body most notably the subcutaneous layer and around joints, tendons and muscles
What is Pacinian Corpuscles
400
Keratinocytes are pushed up through the follicle to create a rod shaped ________ that projects above the skin surface.
What is hair shaft
400
True or false: all of the following are contagious skin disorders, fungal infections, bacterial infections,viral infections and parasitic infections.
What is true
500
Specialized free nerve endings, or pain receptors, that are highly sensitive to chemicals released by damaged cells.
What is nociceptor
500
Cells in this layer continually under go mitosis to create new cells allowing the skin to heal quickly.
What is stratum germinativum or germinating layer
500
Wrapped around each hair follicle that sense any. Ovement of the hair.
What is Hair root plexus
500
True or false:all of the following are considered accessory organs of the skin, nails, hair, glands and sensory receptors.