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www.brainkart.com/article/Human-Digestive-System_39912

Jul 15, 2019 ... Human Digestive System. The food we eat not only contain simple substances like vitamins and minerals butalso contain complex substances ...

drawitneat.blogspot.com/2015/01/human-digestive-system-mainly-have.html

The human digestive system starts with mouth and ends with anus. Intake of food into to mouth is called Ingestion.Mouth encloses a cavity within called Buccal ...

www.nursingtimes.net/clinical-archive/gastroenterology/gastrointestinal-tract-6-the-effects-of-gut-microbiota-on-human-health-21-10-2019

Oct 21, 2019 ... Role in digestion. The microbial communities of the large intestine are predominantly reliant on partially digested food arriving from the small ...