Unit 10 skillS Vellus hair vs. terminal hair O ur body is covered in about five million hair follicles tiny organs on our skin s surface that produce hair. Our hairs have many useful functions and also act as sense organs. Vellus hair is the light, short, fine hair that covers much of a person s body. Only the lips, palms of hands, soles of feet, and some parts of genitalia are hairless. The primary role of vellus hair is to protect the skin and keep the body warm. During puberty, the increase in androgenic hormone levels causes vellus hair to be replaced with terminal hair in certain parts of the body, usually more on men than on women. Terminal hairs are thick, strong, pigmented hairs that grow on the head, in the pubic region, under the arms, and on the face of males. Each hair has a sebaceous gland to lubricate it, whereas vellus hairs have none. The distribution, length and thickness of body hair are determined by genetic and ethnic features and vary from person to person. Hair growth depends primarily on hormones. Male hormones the androgens stimulate hair growth and increase the pigmentation and thickness of the hairs in certain areas of the body. feature: caratteristica increase: aumento length: lunghezza thickness: spessore tiny: minuscolo whereas: mentre This short leaflet to explain about hair for young clients has been mixed up. Match the sentences to re-order it. 3 Frustrated by unwanted hair on your body? Don t be! All body hair serves a purpose 1. Vellus hair is 2. The primary role of vellus hair is 3. The only parts of the body that don t contain hair follicles are 4. During puberty, androgens cause 5. Terminal hair is 6. Females tend 7. For males, terminal hair grows 4 10.1 a. at a greater rate on more parts of the body, including the face, chest, back, legs, arms, hands, and feet. b. some vellus hairs to change to thicker terminal hairs on certain parts of the body. c. the fine, thin, light-colored hair that covers the majority of the body. d. the longer, thicker, and darker hair that grows on the head, in the pubic region, under the arms, and forms beard. e. the palms of the hands, the soles of the feet, lips, and some parts of the genitals. f. to protect the skin and keep the body warm. g. to retain more vellus hair than males. Listen and correct the wrong statements. 1. Vellus hair does not grow from a hair follicle. 2. The medulla in terminal hair allows it to grow strong and long. 3. Vellus hair and terminal hair grow in different ways. 4. The phases of hair growth are anagen, catagen and telogen. 98 5. Vellus hair has a longer period of active growth than terminal hair. 6. Body hair is weaker during the catagen phase because of the limited blood supply to the hair follicle. 7. During the telogen phase, vellus hair and terminal hair grow vigorously. 8. All our body hair grows at the same rate.