The Ability of Some Viruses to Remain Inactive (Latent)for a Period

question 29

Multiple Choice

The ability of some viruses to remain inactive (latent) for a period of time is exemplified by

• A)influenza,a particular strain of which returns every 10-20 years.
• B)herpes simplex viruses (oral or genital),whose reproduction is triggered by physiological or emotional stress in the host.
• C)Kaposi's sarcoma,which causes a skin cancer in people with AIDS but rarely does so in those not infected by HIV.
• D)the virus that causes a form of the common cold,which recurs in patients many times in their lives.

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Definitions:

Nasal Septum

The cartilage and bone that separates the nasal cavity into two nostrils.

Inferior Nasal Conchae

Scroll-like bones located within the nasal cavity that increase the surface area for filtering, warming, and humidifying the air we breathe.

Vomer

A thin, flat bone that forms part of the nasal septum, which separates the left and right airways in the nose.

Ethmoid

A spongy bone located at the base of the nasal cavity that separates the nose from the brain.