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Science biology

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Pregunta:

Describe the first five stages of digestion in the digestive system

Autor: Alana Ray



Respuesta:

Firstly, food is chewed in the mouth as enzymes in the saliva begun digesting the starch into smaller molecules Then the food passed down the oesophagus and into the stomach where enzymes begin the digestion of proteins, with the help of the stomaches hydrochloric acid The food spends several hours in the stomach and the churning action of the stomach muscle turns the food into a fluid; which increases the surface area for enzymes to digest the fluid now passes into the small intestine, at this point chemicals are related into the small intestine from the liver and the pancreas Then the pancreases release enzymes which continue the digestion of starch and protein and they start the digestion of lipids


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