Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 7CYR
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.
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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
Which of the following skin cells alert the immune system to pathogens?a. fibroblastsb. melanocytesc. keratinocytesd. dendritic cellse. tactile cells
Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. The primary skin pigment is melanin, which is derived from the amino acid tyrosine. b. Melanin is produced by melanocytes and covers the nuclei of neighboring dendritic cells. c. Carotene is a brown-black pigment that accumulates in the stratum corneum. d. Increased amounts of blood flowing through the dermis lead to pallor in the skin. e. Hemoglobin is a pigment found in red blood cells, and its color depends on the oxygen level of the blood.
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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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
- 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 C. the epidermis is avascular D. paper cuts only go as deep as the reticular dermis E. the epidermis and papillary dermis are avasculararrow_forwardAs 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_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
- Pigmentation of skin is due to: A. lymphocytes B. monocytes C. leucocytes D. melanocytesarrow_forwardCell division occurs in which layer of the epidermis? A. Stratum granulosum B. Stratum lucidum C. Stratum corneum D. Stratum basalearrow_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 associations is INCORRECT? A. Keratinocytes; found in the stratum spinosum B. Langerhans cells; immune cells C. Melanocytes; typically found in the stratum corneum D. Adipocytes; fat cells E. None of the abovearrow_forwardWhich statement is accurate about melanin or melanocytes? a. Melanin is produced by cells that are located in the stratum spinosum. b. Melanin is a pigment that accumulates inside keratinocytes. c. Darker-skinned individuals have more melanocytes than lighter-skinned individuals. d. Albinism is caused by a lack of melanocytes in the body.arrow_forwardBasal cell carcinomas are the most common form of skin cancers in the United States and are frequently found on the head, neck, and arms. This cancer affects which cells? A. Langerhans cells of the stratum lucidum B. keratinocytes of the stratum spinosum C. melanocytes of the stratum basale D. basal cells of the stratum basalearrow_forward
- For questions 2–6, match the layer of the epidermis with the correctdescription or function:a. stratum basale d. stratum lucidumb. stratum corneum e. stratum spinosumc. stratum granulosum2. Production of keratin fibers; formation of lamellar bodies; limitedamount of cell division3. Sloughing occurs; 25 or more layers of dead squamous cells4. Production of cells; melanocytes produce and contribute melanin;hemidesmosomes present5. Production of keratohyalin granules; lamellar bodies release lipids;cells die6. Dispersion of keratohyalin around keratin fibers; layer appears transparent; cells deadarrow_forwardMatch the following epidermal layer with the correct term. This layer is water resistant and A. Stratum germinativum or basale contains 20-30 layers of dead keratinized cells. Keratinocytes start producing B. Stratum Corneum keratin and keratohyalin here. By the time keratinocytes cells reach this layer, most would have stopped dividing. This glassy layer is present only C. Stratum Granulosum in thick skin (palms and soles). This layer contains keratinocytes D. Stratum Spinosum undergoing mitosis. Melanocytes and Merkel cells are found in this layer. This layer contains epidermal dendritic cells, also known as Langerhans cells. E. Stratum Lucidumarrow_forwardA callus may develop when both thin and thick skin are subjected to repeated pressure. Which layer of the epidermis develops the callus? a. stratum spinosum b. stratum corneum c. stratum basale d. stratum lucidumarrow_forward
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