BIOS 242 WEEK 6 QUIZ
Question 11
pts
(TCO 11) Explain the relationship between chicken pox and shingles, paying special attention
to the pathogenic processes and transmission of each of these diseases.
Correct answer:
Chicken pox and shingles are different manifestations of infection with varicella-zoster virus, a
type of herpesvirus. Chicken pox is most often a childhood disease beginning as a respiratory
infection and then spreading throughout various tissues of the body. The infection eventually
manifests in cells of the dermis, developing into a characteristic rash and "teardrops on rose
petals" lesions. After the infection subsides, the virus can become latent in nerve ganglia and
remain there for decades. Upon reactivation, which happens in about 20% of adults who had
chicken pox as children, the virus travels back down the nerves and causes the characteristic
lesions of shingles. These lesions involve a painful rash that is limited to particular bands of skin
innervated by the infected nerve. Individuals who have never had chicken pox therefore cannot
contract shingles, although they can contract chicken pox from a shingles patient. Chicken pox is
typically much more severe in adults than in children because of the more highly developed
immune response in adults.
Question 1
pts
( TCO 10) Feces, soil, water, and even food can harbor pathogens. Therefore, we should routinely
_____.
eat rare steak
Correct!
thoroughly wash fruits and vegetables before eating them
buy only whole milk
Question 11
pts
(TCO 11) Explain the relationship between chicken pox and shingles, paying special attention
to the pathogenic processes and transmission of each of these diseases.
Correct answer:
Chicken pox and shingles are different manifestations of infection with varicella-zoster virus, a
type of herpesvirus. Chicken pox is most often a childhood disease beginning as a respiratory
infection and then spreading throughout various tissues of the body. The infection eventually
manifests in cells of the dermis, developing into a characteristic rash and "teardrops on rose
petals" lesions. After the infection subsides, the virus can become latent in nerve ganglia and
remain there for decades. Upon reactivation, which happens in about 20% of adults who had
chicken pox as children, the virus travels back down the nerves and causes the characteristic
lesions of shingles. These lesions involve a painful rash that is limited to particular bands of skin
innervated by the infected nerve. Individuals who have never had chicken pox therefore cannot
contract shingles, although they can contract chicken pox from a shingles patient. Chicken pox is
typically much more severe in adults than in children because of the more highly developed
immune response in adults.
Question 1
pts
( TCO 10) Feces, soil, water, and even food can harbor pathogens. Therefore, we should routinely
_____.
eat rare steak
Correct!
thoroughly wash fruits and vegetables before eating them
buy only whole milk
