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Ch. 24 - Pathogenic DNA Viruses
Bauman - Microbiology with Diseases by Taxonomy 6th Edition
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
All textbooksBauman 6th EditionCh. 24 - Pathogenic DNA VirusesProblem 3
Chapter 24, Problem 3

The initial flat, red skin lesions of poxviruses are called____.
a. macules
b. papules
c. pustules
d. pocks

Verified step by step guidance
1
Understand the terminology related to skin lesions: Macules are flat, discolored spots on the skin without any elevation or depression.
Recognize that papules are small, raised, solid bumps on the skin, often seen in various infections or inflammatory conditions.
Know that pustules are raised lesions filled with pus, indicating a collection of inflammatory cells and fluid.
Identify that pocks refer to the characteristic scars or lesions left after poxvirus infections, often after the pustular stage.
Since the question asks for the initial flat, red skin lesions caused by poxviruses, focus on the term that describes flat lesions, which is macules.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Macules

Macules are flat, distinct, discolored areas of skin less than 1 cm in diameter. They do not involve any change in skin texture or thickness and are often the earliest visible skin lesions in various infections, including poxvirus infections.

Papules

Papules are small, raised, solid skin lesions usually less than 1 cm in diameter. They represent a progression from macules and indicate inflammation or cellular infiltration in the skin, commonly seen in viral infections as lesions develop.

Pustules

Pustules are elevated skin lesions filled with pus, indicating a more advanced stage of infection or inflammation. In poxvirus infections, pustules form after papules and are characteristic of diseases like smallpox.
Related Practice
Textbook Question

Which of the following statements is true concerning variola major?

a. It carries a mortality rate of less than 1%.

b. It affects internal organs before appearing on the skin.

c. The causative virus has been totally eradicated from Earth.

d. The skin lesions it causes are smooth, waxy, tumorlike nodules on the face.

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Textbook Question

Name the disease shown in each photo.


a. <IMAGE>

b. <IMAGE>

c. <IMAGE>

d. <IMAGE>

e. <IMAGE>

f. <IMAGE>

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Textbook Question

What observation led scientists to understand the relationship between shingles and chickenpox?

3
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Textbook Question

You have been given a large grant to do postgraduate research on live smallpox viruses. Where in the world would you find samples?

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Textbook Question

What was the difference in the effects of variola major and variola minor?

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Textbook Question

For which of the following reasons are most animal poxviruses unable to infect humans?

a. Affected animals are not in frequent contact with humans.

b. The human immune system makes it impossible for the foreign viral particles to

reproduce effectively.

c. Attachment to human cells is unlikely.

d. Human cells lack the necessary enzymes for infection.

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