Question

1. cosmetologists should have a thorough understanding of the properties of the hair and scalp because ______. a) they are physicians specialized in a medical branch of science that involves the study of the hair and its structure b) understanding how the hair structure is formed, and how hairstyling and chemical services alter hair, will lead to safer, smarter services c) they are responsible for informing clients about the parts of the hair that will be affected by the hair services availed by them d) they are licensed to diagnose, treat, prescribe, or work on unhealthy hair and scalp 2. which of the following refers to the study of the hair, including its diseases and care? a) hematology c) trichology b) rheumatology d) podiatry 3. identify the part of the hair that is located below the surface of the epidermis. a) the hair root c) the hair cuticle b) the cortex d) the hair shaft 4. which of the following statements is true of the hair bulb? a) it is the living portion of the hair found above the epidermis. b) it contains living cells that form the hair strand. c) it produces sebum that lubricates the hair and skin. d) it is the nonliving part of the hair attached to the hair shaft. 5. the ______ muscle is an involuntary muscle in the dermis that attaches to the hair follicle. a) adductor longus c) arrector pili b) deltoid d) soleus

Explanation:

1. Cosmetologists need to understand hair - scalp properties to offer safer and smarter services related to hairstyling and chemical treatments.
2. Trichology is the study of hair, including its diseases and care. Hematology is about blood, rheumatology about joints and connective tissues, and podiatry about feet.
3. The hair root is located below the epidermis. The cortex, cuticle, and shaft are above the epidermis.
4. The hair bulb contains living cells that form the hair strand. It is below the epidermis, and sebaceous glands produce sebum, not the hair bulb.
5. The arrector pili is an involuntary muscle in the dermis that attaches to the hair follicle. The other muscles listed are not related to the hair - follicle in the dermis.

Answer:

1. B. understanding how the hair structure is formed, and how hairstyling and chemical services alter hair, will lead to safer, smarter services
2. C. trichology
3. A. the hair root
4. B. It contains living cells that form the hair strand.
5. C. arrector pili