how is food digested from mouth to large intestine
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⇆ Human digestive system is very complex in nature where different parts are involved and perform different functions by using various digestive juices and enzymes
≅ Alimentary canal is a long tube extending from the mouth to the anus.
⇄ Food is masticated by our teeth in the mouth and mixed with saliva to make it slippery and wet.
→ Salivary glands secrete saliva which contains amylase that helps in the breakdown of carbohydrates into simple ones
→ The tongue helps in mixing the food and pushes it into the next part called oesophagus
→ The soft food mixed with saliva passes through oesophagus by wave like movements to the stomach called peristaltic movements..
⇒ The gastric glands in the stomach secretes gastric juice that contains HCl, protein digesting enzyme pepsin and mucus.
⇒ Partially digested food "chyme" is released in small amounts by sphincter muscles reach small intestine...
⇒ Bile juice secreted by liver and pancreatic juice secreted by pancreas release into the duodenum ( small intestine )
∞ Emulsification of fats is done by bile
∞ Complete digestion of carbohydrates, fats and proteins takes place in the small intestine by intestinal juice
∞ Finger like projections in the walls of small intestine { villi } absorbs the digested food into the blood...
⊂ Rest of the food is sent to the large intestine where most of the water present in it is absorbed from the food
⊆ These materials are then expelled through the anus which is the last part of the alimentary canal
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