Layers of Skin Slides 4-8 Flashcards
Top Layer
Epidermis
Middle Layer
Dermis
Bottom Layer
Hypodermis/Subcutaneous
Melanin
Chemical that determines skin color
Keratin
Protein that provides water-proofing.
Stratum Corneum
Top layer of epidermis, all dead cells.
Stratum Germinativum
Bottom layer, living cells
Vascular
has blood supply (very bottom of epidermis and below)
Avascular
no blood supply (mid-top epidermis)
Dermal papillae
Finger-like things that push into the epidermis that binds the skin’s layers, and in turn, makes it uneven. (fingerprints)
Fibroblasts
Protein fibers that secrete collagen fibers
Collagen
Fibers that provide strength. When people are older, less is produced, and wrinkles form due to less structure
Hypodermis
Thicker and thinner in certain areas, contains major blood vessels and nerves
Fascia
Below the hypodermis- connects skin to body, allows some movement. fibrous tissue the covers muscle, bones, and some organs
Adipose tissue
tissue in hypodermis where fat is stored