Question

Compare and contrast the GI tract, skin and respiratory tract with respect to microbial load.

Compare and contrast the GI tract, skin and respiratory tract with respect to microbial load.

Homework Answers

Answer #1

Gastro Intestinal Tract

Respiratory Tract

Skin

Organisms

1.Stomach – Lactobacilli

2.Small Intestine – Enterococci

3.Large Intestine - Colon bacilli, Staphylococci, Enterococcus feacalis, Peptococcus

1.Nostrils -Staphylococcus epidermidis, Corynebacteria, Staphylococcus aureus

2.Pharynx – Streptococci, Gram negative cocci

Staphylococcu aureus, Staphylococcus epidermidis. Corynebacteria, Streptococci, Anerobes, Peptostreptococci, Yeast

The composition of the flora varies based on the diet, age and culture

Lower respiratory tract is free of microorganisms

2 sqm of skin

Meat eaters – High proteolytic bacteriodes and less coliforms

Compared to vegeterians

May be infected by pathogens like H.Influenzae and S.Pneumoniae due to damage of the epithelium

To eliminate non-resident microorganism skin should maintain low pH, fatty acid and lysozyme

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