Microbe human interaction

Question 1

Microbiome

Answer 1

 Your resident microbes
 Very diverse (1000’s of species)
 Many are commensal (good for them, neutral for you)

Question 2

Residents

Answer 2

Not influenced by hygiene

microbes that become established

Question 3

Transients

Answer 3

Influenced by hygiene
microbes that occupy the body for only short periods
Usually on the skin

Question 4

Microbial Antagonism

Answer 4

When species of bacteria prevent pathogenic bacteria from establishing by out-competing them for resources.

Question 5

What are the areas that possess distinct microbiomes

Answer 5

Skin
Eyes
Oral cavity
Intestines
Urinary/reproductive systems

Question 6

Microbiome of the skin

Answer 6

Skin is the largest and most accessible organ

Two cutaneous populations Transients and Residents

Question 7

Microbiome of the mouth

Answer 7

Flora of the Mouth
 Most diverse and unique flora of the body
 Numerous adaptive niches
 Bacterial count of saliva (5 x 109 cells per milliliter)

Question 8

Microbiome of the Large Intestine

Answer 8

 Has complex and profound interactions with host
 108-1011 microbes per gram of feces
 Intestinal environment favors anaerobic bacteria
 Intestinal bacteria contribute to intestinal odor

Question 9

Microbiome of the respiratory tract

Answer 9

Many upper RT inhabitants Lower regions lack resident flora

Question 10

Microbiome of the urinary Tract

Answer 10

Sites that harbor microflora – Females – Vagina and outer opening of urethra – Males – Anterior urethra

Question 11

Major changes to human microbiome in the last 50 years name 2 causes

Answer 11

1. Antibiotics

2. Increased rates of C-sections