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Chapter 11: Properties of the Hair and Scalp
Chapter 11: Properties of the Hair and Scalp
Chapter 11: Properties of the Hair and Scalp
Chapter 11: Properties of the Hair and Scalp
Chapter 11: Properties of the Hair and Scalp
100
What is (lanugo hair) short, fine, unpigmented downy hair that appears on the body, with the exception of the palms of the hands and the soles of the feet?
vellus hair
100
What is technical term for dandruff; characterized by excessive production and accumulation of skin cells?
pityriasis
100
What is the number of individual hair strands on 1 square inch (2.5 square centimeters) of scalp?
hair density
100

What is the meaning of the term pityriasis?

What is dandruff?

100
What is lowest part of a hair strand; the thickened, club-shaped structure that forms the lower part of the hair root?
hair bulb
200
What is (tinea favus) fungal infection characterized by dry, sulfur-yellow, cup-like crusts on the scalp called scutula?
tinea favosa
200

What is temporary hair loss experienced at the conclusion of a pregnancy?

postpartum alopecia

200

What is the length that healthy hair grows from the scalp?

What is a half-inch a month?

200
What is abnormal hair loss?
alopecia
200

What are the four components of a hair analysis?

What are hair porosity, hair texture, hair density and hair elasticity?

300

What is the chemical units that make up protein?

What are amino acids?

300

What is the three main layers of the hair?

What are the cuticle, cortex and medulla?

300
What is a long chain of amino acids liked by peptide bonds?
polypeptide chain
300

What is the term for male pattern baldness?

What is Androgenic alopecia?

300
What is ability of the hair to stretch and return to its original length without breaking?
hair elasticity
400
Technical term for gray hair; loss of hair's nature melanin pigment?
canities
400

What are the two different types of melanin?

What are eumelanin and pheomelanin?

400
What is infestation of the hair and scalp with head lice?
pediculosis capitis
400
What is middle layer of the hair; a fibrous protein core formed by elongated cells containing melanin pigment?
cortex
400
What is scientific study of hair and its diseases and care?
trichology
500
What is total loss of scalp hair?
alopecia totalis
500

What is the phase when the hair is being shed?

What is the telogen phase?

500
What is severe case of dandruff characterized by an accumulation of greasy or waxy scales mixed with sebum, that stick to the scalp in crusts?
pityriasis steatoides
500

What is the reproductive organ of the scalp?

What is the papilla?

500

What fungus is responsible for pityriasis?

What is malassezia?