Definitions
What is a durable, water-resistant protein found in the skin, fingernails, and hair?
Keratin
What are the three main layers of the skin.
Epidermis, Dermis, and Hypodermis
What are the three types of skin cancer?
Basal Cell Carcinoma, Squamous Cell Carcinoma, and Malignant Melanoma.
What is hair?
Nonliving structure produced in hair follicles.
What are the cells that produce the pigment melanin called?
Melanocytes
What are cells that produce pigment melanin that colors the epidermis?
Melanocytes
How many stages do cells pass through in the epidermis?
Five different stage.
What type of skin cancer can appear to be a mole?
Malignant Melanoma.
What projects all the way into the hypodermis?
Hair follicles.
What skin disorder is caused by the buildup of a product of red blood cell breakdown in the blood and causes skin to turn yellow.
What layer of epidermis usually only found on palms of hands and soles of feet?
Stratum Lucidum
What is the deepest layer of the epidermis?
Stratum Basale
What type of skin occurs in the stratum spinosum?
Squamous cell carcinoma.
What contains the hair's capillaries and nerves?
Hair papilla
What skin disorder is the bluing of skin caused by poor circulation/inadequate oxygen in the blood.
Cyanosis
What is a bundle of smooth muscle cells that can contract and pull on the follicle, causing hair to stand straight up?
Arrector pili
Where do you find the papillary layer and the reticular layer?
What type of skin cancer affects cells in the stratum basale?
Basal Cell Carcinoma
What contains epithelial stem cells that divide, push towards the surface and keratinize?
Hair Matrix
What does ultraviolet light in small doses help the skin produce?
Vitamin D
What are keratinized epidermal cells that protect the tips of the fingers and toes?
Nails
What is the hypodermis important in?
Stabilizing skin and separating it from the muscles.
What does the ABCD rule stand for?
A- asymmetry, two sides of pigmented mole do not match.
B- border irregularity, borders of the mole are not smooth.
C- color, different colors of the pigmented area.
D- diameter, spot is larger then 6mm in diameter.
The papilla and the surface.
Vitamin D deficiency