Question

Why do you think the stomach is structured like a bag rather than a tube like oseophagus?

Answer 1

• The bag-like structure of the stomach helps keep the food stored in the stomach for some time.
• This is needed as food needs to be mixed with digestive juices and enzymes in the stomach and mixed so that the enzymes can act on the food.
• This requires time and can only happen if the food is kept stored for some duration.
• If the stomach would have been tube shaped like the oesophagus, this would not have happened, food would have passed directly into the intestine and digestion would not have been completed.