Integumentary System Vocabulary Part 3 Flashcards
(10 cards)
Type of structural protein that gives skin, hair, and nails ots hard, water-resistant properties
Keratin
Excessive body hair on parts of body where hair is normally absent usually on chin,chest,face, or body.
Hirsutism
Loss of hair
Alopecia
Infant completely covered in thin lanugo hair
Congenital hypertrichosis
Very thin,soft, usually unpigmented downy hair that is found on the body of newborn
Lanugo
Dark hair has more of the brownish-black pigment
Eumelanin
Blonde and red hair have more of the reddish blonde pigment
Pheomelanin
Smooth muscle that is activated in response to external stimuli that pull on hair follicles and make the hair “stand-up”
Arrector pili muscle
Layer of epidermis upon which the nail body forms
Nail bed
Overlies the nail bed
Nail plate