Chapter 12 Test Questions Flashcards
Trichology is the scientific study of ________ including its care and disorders.
Hair.
The main component hair is a ________ called keratin.
Protein.
The part of the hair that extends above the skin is the ______.
Hair shaft.
The dermal papilla is surrounded by the _________ .
Hair Follicle.
Hair’s natural tendency to flow to one side is called the ________.
Hair Stream.
The hair bulb that is the __________.
The lower part of the hair root.
The arrector pilli is a minute ________ in the skin attached to the underside and base of the hair follicle.
Involuntary muscle fiber.
The hair shaft consist of ________ main layers.
Three.
Swelling the hair raises the _________ of the cuticle layer and opens the spaces between them allowing liquids to penetrate.
Scales.
Oxidation tints and other chemical hair products must have a pH __________
Above 7.0
The _________ accounts for about 90 percent of the hairs weight
Cortex.
Hair that is missing the medulla is ___________
Naturally blond.
Hair _______ mature in a process called keratinization
Shafts.
The element in human _________ are sulfur, carbon, oxygen, hydrogen, and nitrogen.
Skin.
__________ are made up of amino acids
Protiens.
