Pearson eText Human Anatomy & Physiology -- Instant Access (Pearson+)
2nd Edition
ISBN: 9780136873822
Author: Erin Amerman
Publisher: PEARSON+
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Textbook Question
Chapter 5, Problem 6CYR
Keratinocytes in the superficial strata of the epidermis die because:
a. they are too far away from the blood supply in the dermis.
b. they are surrounded by a lipid-based substance that makes them more permeable to water.
c. They do not die.
d. No keratinocytes in the epidermis are alive.
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Mark the following statements as true or false. If a statement is false, correct it to make a true statement.a. Melanocytes account for the bulk of the epidermis. b. Keratinocytes begin life in the stratum corneum and gradually are pushed into the stratum basale. c. Dendritic cells are phagocytes of the immune system that protect the skin and deeper tissues from invasion by pathogens. d. Merkel cells produce the pigment melanin
Paper cuts are often very painful but don't always bleed. What two properties of the skin explain this combination?
A. the dermis is innervated, but the epidermis is not
B. the epidermis is innervated
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D. paper cuts only go as deep as the reticular dermis
E. the epidermis and papillary dermis are avascular
The layer of the epidermis in which cells begin the process of keratinization is the a. stratum corneum. b. stratum basale. c. stratum lucidum. d. stratum granulosum.
Chapter 5 Solutions
Pearson eText Human Anatomy & Physiology -- Instant Access (Pearson+)
Ch. 5.1 - 1. What are the major structures of the skin, and...Ch. 5.1 - 2. How does the integument provide protection...Ch. 5.1 - Prob. 3QCCh. 5.1 - What are the other functions of the integument?...Ch. 5.2 - 1. What are the five strata of the epidermis? How...Ch. 5.2 - How does a keratinocyte that begins its life in...Ch. 5.2 - Prob. 3QCCh. 5.2 - Prob. 4QCCh. 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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What are some functions of skin?arrow_forward1.) Epidermis of the skin. Draw the LPO and HPO view of the epidermis and identify its different layers. 2.) Draw an HPO view of the dermis and label its layers/parts. 3.)What are the cell junctions in the stratum spinosum? 4.) Where are the melanocytes located? 5.) Describe the structure and development of the skin and the associated integumentary structures.6.) What are the functions of the integument and its associated structures? 7.) What do all living things have in common? 8.) What kinds of organisms are composed of prokaryotic cells? Eukaryotic cells? What kinds of cells do humans have? 9.) What is tissues?10.) List the four principal tissue types. 11.) Which is true? a. Epithelial tissues are well supplied with blood vessels. b. Connective tissues consist mostly of cells with little extracellular matrix. c. Blood is a connective tissue.arrow_forwardKeratinocytes are the major cellular components of the epidermis. They are found in the four major epidermal strata: basale, spinosum, granulosum and corneum. Explain the characteristics of and the changes in the keratinocytes as they journey from the deepest to the most superficial epidermal strata.arrow_forward
- Cells of the epidermis derive from stem cells of the stratum basale. Describe how the cells change as they become integrated into the different layers of the epidermis. What determines the color of skin, and what Is the process that darkens skin when it is exposed to UV light?arrow_forwardMatch each numbered item with the most closely related lettered item.1. integument2. fingernails3. keratin4. tactile cells5. melanocytes6. keratinocytes7. epidermal dendritic cell8. subcutaneous layer9. reticular layer10. arrector pilia. smooth muscle attached to hair follicleb. most numerous epidermal cellc. a phagocytic cell (active in immune response)d. layer deep to dermise. formed from stratum corneumf. receptors for touchg. composed of epidermis and dermish. dense irregular connective tissuei. fibrous protein in epidermisj. pigment-forming cellsarrow_forwardYou develop a callus, which is a thickening of the epidermis, from a pair or ill-fitting shoes. 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.arrow_forward
- As individuals age, the number of collagen fibers that are found in the dermis of the skin decreases. What are the results of decreased collagen fibers in the dermis? Select all that apply. A The skin loses firmness and becomes wrinkled B The skin develops necrosis and slowly begins to die. C The inflammation levels in the skin increase drastically. The wound healing process in the skin is slower.arrow_forwardWhich of the following statements relating to burns is false? a. it is tissue damage caused by extreme heat b. first-degree burns have damage only in the epidermis c. second-degree burns include damage in the upper dermal layer d. third-degree burns exhibit damage in the entire skin thickness e. None of the abovearrow_forwardWhich of the following statements about melanocytes and keratinocytes is true? a. Melanocytes are in the dermis and keratinocytes are in the epidermis b. Melanocytes produce pigment but keratinocytes do not. c. Both cell types produce waterproofing material. d. Both cell types divide and die as they move away from their blood supply.arrow_forward
- Which of the following skin cells alert the immune system to pathogens?a. fibroblastsb. melanocytesc. keratinocytesd. dendritic cellse. tactile cellsarrow_forwardDespite its apparent durability, the dermis is subject to tearing. How might a person know that the dermis has been previously stretched and/or torn? a.The appearance of visible, silvery-white scars is an indication of stretching of the dermis. b.The stretching causes the tension lines to disappear. c.The blood vessels in the dermis rupture and the blood passes through the tissue, causing permanent "black-and-blue marks." d.There is an episode of acute pain due to the large number of tactile corpuscles.arrow_forwardKindly answer briefly both questions a. Cells of the epidermis are derived from stem cells of the stratum basale. Describe how the cells change as they become integrated into the different layers of the epidermis. b. What structures are produced from keratinization of the epidermis?arrow_forward
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