Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
12th Edition
ISBN: 9780134605203
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
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Chapter 26, Problem 1CT
Summary Introduction
To write:
Hands must be scrubbed before surgery if normal and transient microbiotas are not harmful to the skin.
Introduction:
Microorganism is a widespread term used to include bacteria, yeast,
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Name the three types of microbes most commonly associated with skin.
Why is the skin not always a favorable microenvironment for colonization by bacteria?
How are normal skin microbiota beneficial to the host?
Chapter 26 Solutions
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
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- Microbial diseases of the integumentary system usually have the samesigns and symptoms. How would one know the exact causative agent andname of the disease?arrow_forwardList and explain at least 3 Bacterial infections of the skin.arrow_forwardDifferentiate between normal microbiota and transient bacteria found on skin. Which type is more difficult to remove? Explain.arrow_forward
- Besides bacteria, what other types of microorganisms are commonly found on human skin? Give some specific examples of skin microbiotaarrow_forwardPatients admitted to specialized burn units are usually severely disfigured and at high risk for serious complications, including systemic infections. How does loss of intact skin contribute to risk of systemic infection? Which type of surgical procedure is performed to remove devitalized burn tissue? Which pathogen is most associated with serious infections in burn patients? What type of systemic infection is sometimes seen in patients with extensive tissue loss? Later, what options are available for replacement of skin in burn patients? Please answer questions 1,2,3,4 and 5 if possible.arrow_forwardWhy do pediatricians refrain from using tetracycline (antibiotic) to treat mycoplasmal infections in children?arrow_forward
- Direct contact with pathogenic microorganisms is the most common cause of hospital-acquired infection. How might a dermal (skin) Staphylococcus infection of a staff member result in a urinary traction infection of a patient? Describe possible pathways of contamination during a normal workday.arrow_forwardWhat feature of the skin creates a physical barrier to microbial invasion? Group of answer choices The outer layers are composed of cells full of protein which forms NETs to trap microbes until they are shed. The surface is constantly patrolled by phagocytic cells. The outer layers are dead cells, tightly linked together, and are frequently shed. All of these mechanisms can provide defense against microbial invaders. The oil secreted onto the surface of the skin traps microbes, preventing penetration. The fine hairs move microbes to mucous membranes for phagocytosis.arrow_forwardPropionibacterium acnes is a normal member of the skin microbiome that benefits the body by lowering the skin's pH- an antimicrobial effect. However, P. acnes is also the leading cause of acne. Explain mechanistically how can a bacterium be part of the normal microbiome and beneficial but also be pathogenic?arrow_forward
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