Essentials of Human Anatomy and Physiology (Custom)
15th Edition
ISBN: 9781269752862
Author: Marieb
Publisher: PEARSON
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Chapter 4, Problem 3MC
Summary Introduction
Introduction:
Skin is the largest organ of the body, which forms theoutermost covering of the body. It is made up of multiple layers of epithelial tissue. Skin is composed of the outer epidermis, middle dermis, and deeper hypodermis layers. Apart from other functions, the epidermis gives the skin its tone.
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Chapter 4 Solutions
Essentials of Human Anatomy and Physiology (Custom)
Ch. 4 - Select the one false statement about mucous and...Ch. 4 - More than one choice may apply. Which of the...Ch. 4 - Prob. 3MCCh. 4 - More than one choice may apply. Identify the...Ch. 4 - In investigating the cause of thinning hair, which...Ch. 4 - Which structure is not associated with a nail? a....Ch. 4 - Prob. 7MCCh. 4 - Which of the following is not a skin structure? a....Ch. 4 - 9. Match the structures of the right with their...Ch. 4 - Identify the three types of epithelial membranes,...
Ch. 4 - From what types of damage does the skin protect...Ch. 4 - Explain why we become tanned after sitting in the...Ch. 4 - Prob. 13SAECh. 4 - 14. Name two different categories of skin...Ch. 4 - How does the skin help to regulate body...Ch. 4 - Prob. 16SAECh. 4 - Prob. 17SAECh. 4 - Which skin cancer arises from the youngest...Ch. 4 - Why does hair turn gray?Ch. 4 - 20. Name three changes that occur in the skin as...Ch. 4 - Is a bald man really hairless? Explain.Ch. 4 - Prob. 22CAQCh. 4 - 25. Both newborn infants and aged individuals have...Ch. 4 - A woman who has habitually used a sunbed for the...Ch. 4 - Freds new cycling shorts have got special silicone...Ch. 4 - The water of a swimming pool is hypotonic to our...Ch. 4 - 29. Mr. Rossi, a fisherman in his late sixties,...Ch. 4 - Mr. Grayson is receiving a drug treatment...Ch. 4 - 31. Which type of injection would allow a drug to...Ch. 4 - Prob. 30CAQ
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- Which of the following skin cells alert the immune system to pathogens?a. fibroblastsb. melanocytesc. keratinocytesd. dendritic cellse. tactile cellsarrow_forwardPigmentation of skin is due to: A. lymphocytes B. monocytes C. leucocytes D. melanocytesarrow_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_forward
- All of the following interfere with microbialinvasion of the body excepta. the acid mantle.b. melanization.c. dendritic cells.d. keratinization.e. sebum.arrow_forwardMelanocytes 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_forwardA research study investigates the synthesis of filaggrin-containing granules in skin biopsies from patients of atopic dermatitis. Which of the indicated layers is the site for these granules? Answers A - E AA BB C C D D EE A <-B C -D -Earrow_forward
- 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 melaninarrow_forwardToners and astringent can adjust the pH of the skin a. False b. True ?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
- . Refer to figure 25.13. Explain the overlap betweenareas colored gray and areas marked with distantlyspaced lines. How might vitamin D explain thesedata?arrow_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_forward1. A) A major function of the skin is protection from ______. A. abrasion B. ultraviolet light C. entry of a microorganism D. dehydration E. All of the above B) What is one important function of melanin? A. Resets the diurnal biological clock B. Increases the amount of blood vessels C. Causes the skin to become cooler D. Absorbs harmful radiation E. Strengthens the skin or eyes C) Most of the cells of the epidermis are ________________. A. fibroblasts B. keratinocytes C. macrophages D. Langerhans cells D) The epidermis is nourished by diffusion from capillaries in the ___________. A. papillary layer of the dermis B. hypodermis C. epidermis D. reticular layer of the dermis E) Cell division occurs in which layer of the epidermis? A. Stratum lucidum B. Stratum corneum C. Stratum basale D. Stratum granulosum F) Which of the following is NOT…arrow_forward
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