BROCK BIOL OF MICRO-ACCESS W/EBOOK
BROCK BIOL OF MICRO-ACCESS W/EBOOK
4th Edition
ISBN: 9781323632215
Author: MADIGAN
Publisher: PEARSON C
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Chapter 23, Problem 1RQ
Summary Introduction

Each organ in the human body differs physically and chemically. Therefore, different species occupy different regions in the body while preventing the growth of others. For instance, skin favors the growth of dehydration resistant microorganisms such as Streptococci and Staphylococci species. Anoxic environment present in the large intestine favors anaerobic bacteria. For example, Bacteroides.

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The organs in the human body that are colonized by the microbes are upper respiratory tract, skin, gastrointestinal tract (portions), oral cavity (portions) and urogenital tract. Internal organs, blood, nervous systems, kidney, bladder, lower respiratory tract and lymph in human are not colonized by microbes. These regions are completely devoid of microbes and if they are present in these sites indicates a serious infectious disease.

The organs in each set are common in which they provide microbes with mucosal body surfaces and so they are sheltered in a moist environment with large surface area.

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