Phagocytes of the epidermis are called _________.
- a. microglia
- b. goblet cells
- c. alveolar macrophages
- d. dendritic cells
Introduction:
A phagocyte is a type of cell present within the body which is capable of “engulfing and destroy bacteria” and other “small cells and particles”.
Answer to Problem 1MC
Correct answer:
The phagocytes of the epidermis are known as dendritic cells. Therefore, option (d) is correct.
Option (d) is given as “dendritic cell”.
Explanation of Solution
Justify reason for the correct statement:
Dendritic cells are phagocytes that are present in the epidermis of the skin. They kill microbes non-specifically. The dendritic cells phagocyte the foreign body and break it by the phagolysosome formation.
Hence, option (d) is correct.
Justify reasons for the incorrect statements:
Option (a) is given as “microglia”
Microglia is located in the brain and spinal cord and they are macrophages cells. Hence it is a wrong answer.
Option (b) is given as “goblet cells”.
The goblet cells are epithelial cells which secrete mucin. These cells are usually found in the epithelial lining of the “respiratory and the intestinal tracts”. These cells are not “macrophages or phagocytes”. They are not present in the epidermis. Hence, it is a wrong answer.
Option (c) is given as “alveolar macrophages”
Alveolar macrophages are present in the lungs. Their main function is to remove the dust particles in the lungs due to inhalation. Hence, it is a wrong answer.
Hence, options (a), (b), and (c) are incorrect.
The phagocytes of the epidermis are known as dendritic cells, not the alveolar macrophages, microglia, and goblet cells.
Want to see more full solutions like this?
Chapter 15 Solutions
Microbiology with Diseases by Taxonomy (5th Edition)
- If keratinocytes (keratin -secreting cells) are for stratified squamous keratinized epithelium, what cells are associated with stratified squamous non – keratinized epithelium? * A. Basophils B. Mast cells C. Goblet cells D. Melanocytesarrow_forwardThe stratum spinosum or prickly layer contains cells that appear spikey, known as _____________. a. prekeratin filaments b. melanocytes c. keratinocytes d. desmosomes e. keratinarrow_forwardPigmentation of skin is due to: A. lymphocytes B. monocytes C. leucocytes D. melanocytesarrow_forward
- The primary blast cell for connective tissue proper is the _______ a.hemocytoblast b.chondroblast c.fibroblast d.osteoblastarrow_forwardWhich of the following is a barrier against pathogens provided by the skin? a. high pH b. mucus c. tears d. desiccationarrow_forwardWhich cell is not a phagocyte?a. neutrophil c. dendritic cellb. lymphocyte d. macrophagearrow_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 skin dermis is composed of ________________________. A. elastic connective tissue B. fibrocartilage tissue C. adipose connective tissue D. dense irregular connective tissuearrow_forwardThe layer of the skin composed of dense connective tissue that has projections known as papillae is the ____________. A. stratum corneum B. stratum basale C. dermis D. hypodermisarrow_forward
- In general, skin cancers ________. a. are easily treatable and not a major health concern b. occur due to poor hygiene c. can be reduced by limiting exposure to the sun d. affect only the epidermisarrow_forwardIn response to stimuli from the sympathetic nervous system, the arrector pili ________. a. are glands on the skin surface b. can lead to excessive sweating c. are responsible for goose bumps d. secrete sebumarrow_forwardMark 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_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education