Skin and Body Membranes 2 Flashcards
Skin Functions aids in
heat regulation
excretion of urea and uric acid
Synthesizes vitamin D
outer layer
Stratified squamous epithelium
Often keratinized (hardened by keratin)
epidermis
Layer of Epidermis
Stratum basale
Stratum spinosum
Stratum granulosum
Stratum lucidum
Stratum corneum
Cells undergoing mitosis
Lies next to dermis
stratum basale
Occurs only in thick skin
Stratum lucidum
Single-like dead cells
Stratum corneum
Pigment produced by melanocytes
Color is ______ to _____ to _____
melanin
yellow to brown to black
__________are mostly in the stratum basale
Melanocytes
Amount of melanin produced depends upon
genetic and exposure to sunlight
Skin Color Determinants
Melanin
Carotene
Hemoglobin
Cyanosis
Yellow, brown or black pigments
Melanin
Orange-yellow pigment from some vegetables
Carotene
Red coloring from blood cells in dermis capillaries
Oxygen content determines the extent of red coloring
Hemoglobin
Low oxygen content creates a bluish appearance
Cyanosis
Dense connective tissue
DERMIS