Question: All professional hair services must be based on a thorough understanding of the growth, ________________, and composition of the hair.

Answer: structure

Question: List why it is important for a cosmetologist to study and understand the properties of the hair and scalp.

Answer:

Question: ___________________ is the scientific study of hair and its diseases and care, which comes from the Greek words _________, meaning “hair,” and __________, meaning “the study of.”

Answer: trichology

trichos

ology

Question: A mature strand of human 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.

Answer: hair root

hair shaft

Question: Hair Follicle

Answer: the tube-like depression or pocket in the skin or scalp that contains the hair root

Question: Hair Bulb

Answer: the thickened, club-shaped structure that forms the lower part of the root

Question: Dermal Papilla

Answer: small, cone-shaped elevation located at the base of the hair follicle that fits into the hair bulb

Question: Arrector Pili Muscle

Answer: small, involuntary muscle in the base of the hair follicle

Question: Sebaceous Glands

Answer: the oil glands in the skin that are connected to the hair follicles

Question: Hair follicles are distributed all over the body with the exception of:

Answer: palms of the hands and soles of the feet