Chapter 6 Flashcards
Functions of the skin
protective covering
regulate body temp
prevents dehydration
excretes small amounts of waste
Skin layers
epidermis
dermis
Layers of epidermis
stratum basale stratum spinusum stratum granulosum stratum lucidum stratum corneum
Which layer found in the soles and palms?
stratum lucidum
Melanocytes
produce melanin
Hair follicles
nourished by dermal blood vessels
Arrector pili
smooth muscle, causes goose bumps
Increase number of hair follicles?
hypertrichosis
abnormal distributions of blood vessels
birthmarks
Dark pigment that absorbs uv light
melanin
Genetic abnormality in which no pigments are found in human hair, eyes or skin
albinism
Loss of hair
vitiligo
fine fuzzy layer of hair found on a fetus
lanugo hair
short fine light colored and barely noticeable hairs
vellus hair
thick long and dark hairs
androgenic hairs (terminal)