write the material required to conduct an experiment regarding food movement in oesophagus
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Answer:
Aim : Making a mode of oesophagus to observe how bolus moves forward. Material required : Potatoes cycle tube lubricate oil Procedure : 1 Take a piece of waste cycle tubes and insert one or two potatoes into it. 2 Lubricate the inner side of the tube with oil. 3 In the same way smear oil over potatoes.
Peristalsis : Contraction and relaxation of circular and longitudinal muscles bring in a wave - like motion that propels the food bolus into the stomach from oesophagus by the action called as peristalsis.Experiment : Aim : Making a mode of oesophagus to observe how bolus moves forward. Material required : Potatoes cycle tube lubricate oil Procedure : 1 Take a piece of waste cycle tubes and insert one or two potatoes into it. 2 Lubricate the inner side of the tube with oil. 3 In the same way smear oil over potatoes. 4 Insert oil coated potatoes in the tube. 5 Now try to push the potatoes by squeezing the tube from behind the potato. Observation : Oil acted as lubricant to push the potato easily in the forward direction. Conclusion : The contraction and relaxation of muscles of oesophagus results in peristalsis. This action is called as peristalsis.