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Chapter 11

QuestionAnswer
______ is the scientific study of hair and its disease and care, which comes from the Greek word ____, meaning "hair" and ____, meaning "the study of." Trichology, trichos, and ology.
A mature strand of hair is divided into two parts: the ____, located below the surface of the epidermis, and the ____, the portion of the hair that projects above the epidermis. Hair root and hair shaft.
The tube-like depression or pocket in the skin or scalp that contains the hair root. Hair follicle
Small, cone-shaped elevation located at the base of the hair follicle that fits into the hair bulb. Dermal papilla
Small, involuntary muscle in the base of the hair follicle. Arrector pili muscle
The oil gland in the skin that are connected to the hair follicle. Sebaceous glands
The lowest part of the hair strand is called the hair _____. Bulb
The 3 main layers of the hair shaft are.. 1. Hair cuticle 2. Cortex 3. Medulla
Hair is filled up with _____ _______ that grows cells originating within the hair follicle. Fibrous protein
What does COHNS stand for?? What are the Percentages?? C- carbon 51% O- oxygen 21% H- hydrogen 6% N- nitrogen 17% S- sulfur 5%
The COHNS elements are found in the ____ and the _____. Skin and nails.
These type of side bonds are broken by alkaline or acid solutions Salt bonds
____ are the coloring matter in the cortex that give natural color to the hair. Melanin
_________ is the lighter pigment that provides natural colors ranging from red to ginger to yellow to blonde tones. Phenomelanin
Units that are joined together and make up proteins Amino acids
The strong, chemical bond that joins amino acids Peptide bond
The ____ _______ of hair refers to the shape of the hair strand and is described as straight, wavy, curly, or extremely curly. Wave pattern
The 2 main types of hair found on the body are ____ hair and _____ hair. Vellus and Terminal
Is the short, fine, un-pigmented, and downy hair that appears on the body. Vellus hair
On adults, vellus hair is usually found on the Forehead, eyelids, and bald scalp
Terminal hair is found on the Scalp, legs, arms, and bodies of males and females.
The 3 phases of the growth cycle are 1. Anagen 2. Catagen 3. Telogen
Gray hair has no _______. Melanin
Hair loss in round patterns is referred to as Alopecia areata
A topical medication that is put on the scalp twice a day, and is sold over the counter as a non-prescription drug, is _________. The most commonly known product that contains this drug is called Rogaine. Minoxidil
Technical term for gray hair is Canities
Technical term for split ends is Trichoptilosis
Technical term for knotted hair is Trichorrhexis nodosa
Technical term for beaded hair is Monilethrix
Infection of the hair follicle caused by staphlococcus is Folliculitis
Fungal infection characterized by red papules, or spots, at the opening of the hair follicle is Tinea capitis
_____ is caused by a parasite called a mite Scabies
_____ is the infestation of the hair and scalp with head lice. Pediculosis capitis
______ an acute, localized bacterial infection of the hair follicle. Furuncle
________ is the thickness or diameter of the individuals hair strand. 3 types are coarse, medium, or fine. Texture
_______ is the number of individual hair strands per square inch. Density
The 3 porosity levels are known as 1. Low (resistant) 2. Average (normal) 3. High (overly porous)
Hair elasticity is an indication of The strength of the side bonds that held the hairs individual fibers in place.
Hair stream that had circular patterns outward from a central point. Whorl
Created by: megannicolecxx
 

 



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