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Anatomy
Hair Structure & Compostition
Hair Growth & Loss

Hair & Scalp Disorders
Hair & Scalp Analysis
100
The cell part that encloses the protoplasm.
What is cell membrane?
100
The scientific study of hair and its diseases.
What is trichology?
100
Also known as the growth phase, new hair is produced. Average growth of healthy scalp is 1/2 inch per month.
What is the anagen phase?
100
Pityriasis is the technical name and is characterized by the excessive production and accumulation of skin cells.
What is dandruff?
100
1. Fine 2. Medium 3. Coarse
What are the (3) different textures of hair?
200
the phase of metabolism that involves the breaking down of complex compounds into smaller ones.
What is catabolism?
200
The tube-like depression or pocket in the skin or scalp that contains the hair root.
What is the hair follicle?
200
Also known as lanugo hair. Short, fine, unpigmented and downy hair that appears on the body.
What is vellus hair?
200
Is a condition of abnormal growth of terminal hair in areas of the body that normally grow only vellus hair.
What is hypertichosis?
200
Measures the number of hairs per square inch of scalp.
What is hair density?
300
Protective covering of the body surfaces, such as skin, mucous membranes and tissue inside the mouth.
What is epithelial?
300
1. Cuticle- Location: outermost layer of hair Function: Protects the inner structure of hair 2. Cortex- Location: middle layer of hair Function: Contains melanin, 90% weight, elasticity 3. Medulla- Location: innermost layer of hair Function: No known function currently.
What are the 3 layers of hair, location and functions?
300
Also known as the "resting phase". The final phase in the hair cycle and lasts until the fully grown hair is shed.
What is the telogen phase?
300
The technical term for knotted hair. It is characterized by brittleness and the formation of nodular swellings along the hair shaft.
What is trichorrhexis?
300
The ability of the hair to absorb moisture.
What is porosity?
400
Structures composed of specialized tissues designed to perform specific functions in the body.
What is organs?
400
COHNS: Carbon, Oxygen, Hydrogen, Nitrogen & Sulfur
What are the major elements that make up human hair?
400
1. Androgenic Alopecia 2. Alopecia Areata 3. Alopecia Totalis
What are the main (3) different types of hair loss?
400
The most frequently encountered infection resulting from hair services. Also known as "barber's itch".
What is tinea barbae?
400
The ability of the hair to stretch and return to its original length without breaking.
What is elasticity?
500
Ring muscle of the eye socket; enables you to close your eyes.
What is orbicularis oculi?
500
1. Salt Bond: Weak,breaks by heat and water 2. Hydrogen Bond: Allows hair to stretch, weak bond and breaks by heat and water. 3. Disulfide Bond: Strong bond, joins sulfur atoms together to create (2) polypeptide
What are the side bonds of the hair?
500
1. Eumelanin: brown to black tones 2. Pheomelanin: blond to red tones
What are the (2) types of melanin?
500
1. Furuncle: Technical term for a boil. 2. Carbuncle: Inflammation of the subcutaneous tissue, similar to a furuncle, but is larger.
What are the two types of staphylococci bacteria that infect the skin or scalp?
500
1. Hair Stream - hair flowing in the same direction. 2. Whorl- hair forming a circular pattern, "crown". 3. Cowlick - a tuft of hair that stands straight up.
What are the (3) main growth patterns?