Explain the human digestive system with the help of a labelled diagram
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Draw a labelled diagram of human digestive system and explain it. (i). Food is crushed and cut in the mouth with the help of teeth and is mixed with saliva that is secreted by three salivary glands(one below the tongue and two at the side of the jaw) to make it wet and slippery, this process is known as mastication.
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1 buccal cavity the mouth is also known as oral cavity or buccal cavity
2 oesophagus the muscular tube through which food pass from the thrat to stomach
3 stomach is part of digestive system it is present between oesophagus and small intestine.it contain hydrochloride acid
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