Process of Digestion
-> Food is taken by the mouth and chewed with teeth then mixup with saliva.
-> Saliva secreted by the salivary glands. There are three salivary glands
1. Parotid salivary glands,
2. Submandibular salivary glands
3. Sublingual Salivary glands
-> Salivary glands secrete saliva. Saliva has enzymes that break down complex foods into small particles which are easy to digest.
-> Food then passes into the esophagus (Oesophagus is food pipe)
-> Food then goes to the pharynx and pushes to the stomach.
-> Stomach secretes the gastric juice which helps in the digestion of food.
-> Parietal cell of the stomach produces HCL(gastric juice). Then the food goes to the small intestine. Where 70% of food is absorbed.
-> Liver produced the bile acids bile stored in the gall bladder. Bile emulsifies the fatty acid(fats).
-> Most of the food is absorbed in the small intestine and then goes to the large intestine(colon).
-> In the large intestine, the salt and water are reabsorbed and undigested food is gone to the anus for expelling out from the body.
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