Epidermis
Dermis
Accessory Organs
General
100
T/F- There is blood in the epidermis
False
100
T/F- The dermis does not have any blood supply.
False
100
What are the 4 major appendages of the skin?
Sweat Glands, Sebaceous Glands, Hairs, Nails
100
What are the three major layers of skin?
Epidermis, dermis, hypodermis
200
What are the layers of the epidermis in your palms from superficial to deep?
Stratum corneum, luckidum, granulosum, spinosum, basale
200
What main type of tissue makes up the dermis?
Connective tissue
200
What is another word for oil?
Sebum
200
What is a common protein in hair, skin, and nails?
Keratin
300
What type of cell makes up the majority of the epidermis?
Keratinocytes
300
What is the layer of skin deep to the dermis?
Hypodermis
300
What is the scientific name for sweat glands?
Suderiferous Glands
300
What are the muscles responsible for goosebumps?
Arrector pili
400
What cells are primarily responsible for pigment?
Melanocytes
400
What are the ridges that form finger prints called?
Papillary layers
400
What are the three layers in a hair shaft?
Medulla, Cortex, Cuticle
400
Why are melanocytes found in the deeper layers of the epidermis and not the superficial layers?
They would be naturally shed if they were in the superficial layers.
500
What are the three pigments that contribute to skin color?
Melanin, Carotene, Hemoglobin
500
Why do accessory organs develop in the dermis and not epidermis?
They would be sloughed off in the epidermis
500
What glands produce ear wax?
Ceruminous Glands
500
What are two evolutionary reasons for the evolution of the variation of skin color observed around the world?
Folic acid and vitamin D
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