Digestive Pathway Step-Through
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Mouth
Oesophagus
Stomach
Small intestine
Large intestine
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Mouth
Food enters and is chewed. Saliva moistens the bolus and delivers the first enzyme.
Physical process
Mastication
pH
6.5 – 7.0
Key enzyme
Salivary amylase
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Work through each digestive organ by answering the question correctly. Use the
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Tip: Remember that pH, enzyme specificity, and physical processing are precisely matched at each stage. Press R to restart.