When the digestive system breaks down the food osmosis helps to absorb the nutrients into the intestine and individual cells. This process occurs in both small and large intestine. However, majority of the process occurs in large intestine only. As the main function of the large intestine is to remove fluid and salts, water flows out of the large intestine with the lack of salt due to osmosis. The high concentration of the particles in the blood than in the large intestine, water diffuses towards the particle-rich blood. ...

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