True about colonic organisms is -
• At birth, the intestine is sterile, but organisms are soon introduced with food.
• In the breastfed children, the organisms present in the intestine: Lactic acid streptococci and Lactobacilli.
• In normal adults, the stomach acidity keeps the number of microorganism at minimum, unless obstruction at the pylorus favors the proliferation of gram positive cocci and bacilli.
• As the pH of intestinal contents becomes alkaline, the resident flora gradually increases.
• In diarrhea, bacterial count decreases, whereas count increases in intestinal obstruction.
Distal ileum 103- 105 org
colon 1010-1011
First org in new born is coliforms and streptococcus
Chyme in jejunum contains many bacteria