Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 11CYR
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. The pigment hemoglobin in red blood cells gives skin a pinkish hue when it binds high amounts of oxygen.
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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. 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.
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
C. the epidermis is avascular
D. paper cuts only go as deep as the reticular dermis
E. the epidermis and papillary dermis are avascular
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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- Which 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_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_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
- Which 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_forwardWhich of the following is not a function of the subcutaneous layer of skin? a. Stores fat that can be used for food b. Helps the body in temperature regulation c. Protects the underlying tissue by acting as a "shock absorber" d. Produces melanin to protect skin from the ultraviolet rays of the sun The lower right abdominopelvic quadrant includes all of the: a. right epigastric region b. right lumbar region c. right iliac region d. right hypochondriac region An important function of the cell membrane is: a. the production of energy b. aiding in protein formation c. acting as an "identification tag" for the cell d. none of the abovearrow_forwardPigmentation of skin is due to: A. lymphocytes B. monocytes C. leucocytes D. melanocytesarrow_forward
- 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.arrow_forwardThe outermost layer of the skin is the a. epidermis. b. dermis. c. hypodermis.arrow_forwardwhich of the following types of collagen form bundles in the reticular layer of the skin a. type 1 b. type 2 c. type 3 d. type 4arrow_forward
- Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes ________ a.maintain the appropriate pH in order for the melanocyte to synthesize melanin granules. b.provide the melanocyte with nutrients necessary for melanin synthesis. c.maintain the appropriate temperature so the product of the melanocyte will not denature. d.accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer.arrow_forwardThe hands and feet experience high amounts of abrasion. It contains so called thick skin having 5 epidermal strata. Which epidermal layer in thick skin consists of non-dead cells? a. stratum corneum b. stratum lucidum c. stratum granulosum d. a and b e. a, b, and carrow_forwardSquamous cell carcinoma arises from: a. keratinocytes in stratum corneum. b. keratinocytes in stratum basale. c. keratinocytes in stratum spinosum. d. melanocytesarrow_forward
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