4) What happens when the food is pushed into the food pipe? Draw a diagram to show the movement of the
food in the oesophagus.
5) Show with the help of an experiment that heat travels through solids by conduction.
6) Give example of steel bridge, fire alarm and the sections of the rail tracks the show expansion around
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The action of peristalsis looks like an ocean wave moving through the muscle. The muscle of the organ produces a narrowing and then propels the narrowed portion slowly down the length of the organ. These waves of narrowing push the food and fluid in front of them through each hollow organ.
Explanation:
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