Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Chapter 5, Problem 5AYKB
Many antiaging skin creams contain collagen and hyaluronic acid. Manufacturers claim that the collagen and hyaluronic acid applied to the surface of the skin will be absorbed into the dermis, where they will be incorporated into dermal tissue.
a. What are collagen and hyaluronic acid, and what are their functions? (Connects to Chapter 2)
b. Are these substances polar or nonpolar?(Connects to Chapter 2)
c. Predict whether or not these substances are likely to be absorbed by the epidermis.
d. Predict the effectiveness of the creams.
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Chapter 5 Solutions
Human Anatomy & Physiology
Ch. 5.1 - 1. What are the major structures of the skin, and...Ch. 5.1 - Explain how the integument provides protection...Ch. 5.1 - Prob. 3QCCh. 5.1 - Describe the other functions of the integument....Ch. 5.2 - 1. What are the five strata of the epidermis? How...Ch. 5.2 - Explain how a keratinocyte that begins its life in...Ch. 5.2 - In addition to keratinocytes, what three types of...Ch. 5.2 - Compare and contrast thin and thick skin.Ch. 5.3 - Which type of tissue makes up the papillary layer...Ch. 5.3 - What are the functions of the dermal papillae?
Ch. 5.3 - 3. Which type of tissue makes up the reticular...Ch. 5.3 - 4. What other structures are located in the...Ch. 5.3 - 5. How does the papillary layer of the dermis...Ch. 5.3 - What causes tension lines and flexure lines? How...Ch. 5.4 - How is melanin produced, and how does it interact...Ch. 5.4 - What are the functions of melanin?Ch. 5.4 - 3. What is carotene, and what color does it give...Ch. 5.4 - Prob. 4QCCh. 5.4 - 5. How can the oxygen content of the blood affect...Ch. 5.4 - 6. What is cyanosis, and what can it tell us...Ch. 5.5 - How do the hair shaft and hair root differ?Ch. 5.5 - How does a hair grow in length?Ch. 5.5 - Prob. 3QCCh. 5.5 - Define the following terms: nail bed, nail plate,...Ch. 5.5 - How does nail growth occur?Ch. 5.5 - Prob. 6QCCh. 5.5 - What are the other three types of sweat glands,...Ch. 5.5 - 8. How do sebaceous glands and sebum differ from...Ch. 5.6 - Prob. 1QCCh. 5.6 - Prob. 2QCCh. 5.6 - What is cancer?Ch. 5.6 - 4. How do the three types of skin cancer differ?
Ch. 5 - Explain why the skin is an organ.Ch. 5 - Which of the following correctly describes the...Ch. 5 - Which of the following is not a function of the...Ch. 5 - 4. Explain what happens to dermal blood vessels...Ch. 5 - Number the strata of thick skin epidermis from...Ch. 5 - Keratinocytes in the superficial strata of the...Ch. 5 - Mark the following statements as true or false. If...Ch. 5 - Which of the following statements is false? a....Ch. 5 - What are the functions of the dermal papillae?Ch. 5 - Epidermal ridges are created by: a. the epidermal...Ch. 5 - 11. Mark the following statements as true or...Ch. 5 - 12. Which of the following is not a function of...Ch. 5 - 13. Fill in the blanks: The portion of the hair...Ch. 5 - Nail growth occurs when: a. cells in the nail...Ch. 5 - Prob. 15CYRCh. 5 - Match each type of gland with its correct...Ch. 5 - How do sweat and sebum differ?Ch. 5 - 18. Which type of burn involves the epidermis and...Ch. 5 - 19. The type of skin tumor that involves the...Ch. 5 - Prob. 1CYUCh. 5 - Prob. 2CYUCh. 5 - The hair and nails are sometimes called accessory...Ch. 5 - 1. You are working in the emergency department...Ch. 5 - 2. After Ramon’s skin came into contact with a...Ch. 5 - 3. Which of the following is not a function of...Ch. 5 - 4. What would happen to the skin if the oil...Ch. 5 - Many antiaging skin creams contain collagen and...Ch. 5 - 6. Would a mild second-degree burn be likely to...
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- As shown If you zoom on the cells of the stratum spinosum, what is distinctive about them?arrow_forward63. Which of the following statements is/are true about collagen? a) It gives epithelial layers tensile strength and allows them to stretch. b) It requires hydroxylation of particular amino acids post-translationally. c) It is present in different epithelial cell types in different forms, such that it serves as a usual marker for the origin of difference cancers. d) a and c e) a, b and carrow_forwardWRITE ABOUT A THEME: ORGANIZATION Hair is largelymade up of the protein keratin. In a short essay (100–150words), explain why a shampoo containing protein cannotreplace the protein in damaged hair.arrow_forward
- (i) Describe the structure of waxes. (ii) Suggest a reason why wax is used to coat vegetables and fruits. ахarrow_forwardThe product obtained from the partial hydrolysis of collagen O A. myosin B. actin O c. gelatin O D. thrombin Barrow_forwardWhich of the following is an illustration of cell sorting? When dissociated epidermal and neural cells are mixed together, they will transdifferentiate and adopt a different fate A than their embryonic fate. When dissociated epidermal and neural cells are mixed together, they reaggregate and then segregate into two layers: B an epidermal layer and a neural layer. When dissociated epidermal and neural cells are mixed together, they can influence each other's development through paracrine signaling. Dissociated presumptive epidermal cells can spontaneously reaggregate after the dissociating agent has been removed. E When presumptive epidermal cells are isolated from the embryos, they dissociate spontaneously.arrow_forward
- 38. What are the principal tissue stains used in histology and describe where and what color each stain? A. The hematoxylin stains cell nuclei blue, and eosin stains the extracellular matrix and cytoplasm pink. B. The hematoxylin stains cell nuclei pink, and eosin stains the extracellular matrix and cytoplasm blue. C. The hematoxylin stains the extracellular matrix and cytoplasm blue, and eosin stains the cell nuclei pink. D. The hematoxylin stains the extracellular matrix and cytoplasm pink, and eosin stains the cell nuclei blue.arrow_forwarda) Give the importance of the hexose monophosphate shunt. b) Give the importance of its products? c) In which type of tissue and which part of the cell does it commonly occur?arrow_forwardPlease help me with this question. More than one answer may be correct. Molecules involved in forming an adherens junction include ____. Options: A) occludin B) claudin C) actin D) classical cadherins E) cateninsarrow_forward
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