A look at the biological functions that produce burps and farts.
- Burps are caused when swallowed air forces open the stomach sphincter and travels up the oesophagus.
- Farts are caused when swallowed air travels down the digestive tract and mixes with other gases.
- In the large intestine, bacteria produce hydrogen sulphide, carbon dioxide and methane.
- Hydrogen sulphide is responsible for the smell released when you fart.
Everyone burps and farts, but why?
They are both just gases escaping from our bodies.
When we eat or drink, we don't just swallow food or liquid, we also swallow air.
This air contains gases like nitrogen and oxygen.
When we swallow a lot of these gases into the stomach, they need to …
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