Since the Cardiovascular and Lymphatic Systems Are Not Directly Accessible

question 60

Multiple Choice

Since the cardiovascular and lymphatic systems are not directly accessible to microbes ________.

• A)it was initially believed that the systems lacked normal biota,however the Human Microbiome Project suggests that low levels of microbes may exist in the healthy state
• B)both systems are sterile in the healthy state
• C)the abundant microbiota enter via the gastrointestinal tract then cross the blood vessels
• D)the Human Microbiome Project confirmed that only pathogens exist in both systems

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Definitions:

Coefficient

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Variation

The degree to which data points in a set differ from the mean value of the set, indicating the distribution and dispersion of the set.

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