Chapter 11: Properties of the Hair and Scalp 1-2 Worksheet

Abnormal hair loss
Autoimmune disorder that causes the affected hair follicles to be mistakenly attacked by a person's own immune system; usually begins with one or more small, round, smooth bald patches on the scalp.
Total loss of scalp hair
Units that are joined together end to end like pop beads by strong, chemical peptide bonds (end bonds) to form polypeptide chains that compromise proteins.
AKA growth phase; phase during which new hair is produce
AKA androgenetic alopecia; hair loss characterized by miniaturization of terminal hair that is converted to vellus hair; in men, it is known as male pattern baldness
Technical term for gray hair; results from the loss of the hair's natural melanin pigment
8/65 Technical term for gray hair; results from the loss of the hair's natural melanin pigment Canities Inflammation of the subcutaneous tissue caused by staphylococci; similar to a furuncle but larger
The brief transition period between the growth and resting phases of a hair follicle. It signals the end of the growth phase.
the 5 elements- carbon, oxygen, hydrogen, nitrogen and sulfur - that make up human hair, skin, tissue and nails.
Middle layer of the hair; a fibrous protein core formed by elongated cells containing melanin pigment.
Tuft of hair that stands straight up
An amino acid joined with another cysteine amino acid to create cystine amino acid
An amino acid that joins together 2 peptide strands
Strong chemical bond that joins the sulfur atoms of two neighboring cysteine amino acids to create one cystine, which joins together two polypeptide strands like rungs on a ladder
Technical term for brittle hair
Boil;acute, localized bacterial infection of the hair follicle that produces constant pain
Lowest part of the hair strand;the thickened, club shaped structure that forms the lower part of the hair root.
Lowest part of the hair strand;the thickened, club shaped structure that forms the lower part of the hair root. Hair bulb Outermost layer of the hair; consisting of a single, overlapping layer of transparent, scale-like cells that look like shingles on a roof
The number of individual hair strands on 1 square inch (2.5 square centimeters) of scalp
Ability of the hair to stretch and return to its original length without breaking.
The tube-like depression or pocket in the skin or scalp that contains the hair root.
Ability of the hair to absorb moisture.
Ability of the hair to absorb moisture.
The part of the hair located below the surface of the epidermis
The portion of hair that projects above the epidermis