9 Fill in the blanks: 10 Eccrine sweat is released into a a. a duct; a hair follicle. b. a hair follicle; a blood vessel. c. a duct; a blood vessel. d. a hair follicle; a duct. corpuscles in the dermis detect pressure, whereas corpuscles in the dermis detect fine touch. , and sebum is released into a D Name Section Date Check Your Understanding Critical Thinking and Application Questions UNIT 6 REVIEW 1 You develop a callus, which is a thickening of the epidermis, from a pair of ill-fitting shoes. a To treat the callus, you decide to shave off some of the excess epidermis. While doing this, you notice that there is no pain or bleeding. Why wouldn't it cause pain to remove only the superficial part of the epidermis? Why wouldn't it bleed? b Unfortunately, you go a bit overboard and feel a sudden pinch, after which you notice you are bleeding. What has happened? Are you still in the epidermis? Explain. 2 Shampoos and hair conditioners often claim to have nutrients and vitamins your hair must have to grow and be healthy. a What is the composition of the hair shaft onto which shampoos and conditioners are applied? b Taking into account the composition of the hair shafts, do you think these vitamins and nutrients will be beneficial? Why or why not? 3 A treatment for ingrown nails is to remove the nail and apply a chemical such as phenol to the cells of the nail matrix, which kills the cells. What effect will killing the cells of the nail matrix have on the nail? Explain. Integumentary System UNIT 6 151