Skin
Gives the body smoothness and contour while providing a protective cushion for the skin?
What is subcutaneous tissue
Part of the natural nail unit that protects the tips of the fingers and toes
What is the Nail Plate
Portion of the hair root structure that supplies nutrients so that the hair can grow
What is the dermal papilla
Defined as the thickness or diameter of an individual hair strand
What is texture
Short fine unpigmented hair
What is vellus hair
The functions of the sudiferous glands?
What is to excrete sweat, regulate body temperature, and eliminate waste products
Average time it takes for fingernail plates to be fully replaced
4 to 6 months
The layer of the hair shaft that provides strength, elasticity, and color
What is the cortex
The ability of the hair to absorb moisture
What is porosity
Long chain of peptide bonds
What is polypeptide chain
THe layer of the epidermis forms fingerprints and footprints?
What is Stratum Lucidum
The lateral nail fold is also known as
What is the sidewall
The outermost layer of the hair
What is the cuticle
Measurement that describe the number of individual hair strands on 1 square inch of the scalp
What is density
Natural hair color is the result of
What is melanin
The fibrous protein that is the principal component of hair and nails
What is Keratin
Water content of a heathly nail
What is 15 to 25 percent
Hair is approximately ______ % protein
What is 90
Can cause dry hair and scalp
What is inactive sebaceous glands
Bond that is broken by water or heat
What is hydrogen
Name the five layers of the epidermis
Stratum Corneum, Stratum Lucidum, Stratum Granulosum, Stratum Spinosum ,Stratum Germinativum
Helps guide the nail plate along the nail bed as it grows
What is bed epithelium
The major chemical elements that make up human hair
What is carbon, oxygen, hydrogen, nitrogen, and sulfer
The growth phase of the hair
What is anagen
Bond that is broken by a change in pH
What is salt