A. Oesophagus: In oesophagus, the peristaltic movements help in pushing the food forward into the stomach for further digestion.
B. Stomach: Peristaltic movements help in properly mixing the food mass with the enzymes and mucus secreted in the stomach to form chyme. It also helps in further moving the food mass into the duodenum.
C. Small intestine: It helps in mixing the chyme with the digestive juices secreted by liver, pancreas and intestines. It also helps in pushing the digested food further in the alimentary canal.
D. Large intestine: The peristaltic movements push the remaining undigested mass towards the end of the alimentary canal.
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