--- title: The body's rough side: burps, farts, snot, sneezes, hiccups and poo — a lesson of Mova's school · trees and pragmatics description: «The body's rough side: burps, farts, snot, sneezes, hiccups and poo», a lesson of the biology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Burps, farts, snot, sneezes, hiccups and poo make everyone giggle, but each one is the body doing a us --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / The body's rough side: burps, farts, s… # The body's rough side: burps, farts, snot, sneezes, hiccups and poo Lesson 364 of the biology course of Mova's primary school: 19 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/0/) — Burps, farts, snot, sneezes, hiccups and poo make everyone giggle, but each one is the body doing a useful job: letting gas out, trapping germs, clearing the nose or getting rid of waste. - [1](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/1/) — Think of a fizzy drink: shake it and the gas wants out. - [2](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/2/) — Your stomach is the same, so after a can of cola the gas comes back up as a burp. - [3](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/3/) — Your nose is a sticky dust trap, your gut is a home for trillions of bacteria that make gas, and your poo is mostly water and bacteria, not old food. - [4](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/4/) — Everybody does all of these things, teachers and queens included; the only rule is to do them politely and wash your hands. - [5](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/5/) — A burp is gas from the stomach coming back up, swallowed air plus the carbon dioxide bubbles of fizzy drinks, and babies gulp air while feeding, so grown-ups pat their backs. - [6](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/6/) — Most fart gas is made by bacteria in the large gut breaking down fibre from beans, vegetables and bread, plus some swallowed air. - [7](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/7/) — Most fart gas has no smell at all; only a tiny bit of sulphur gas makes the stink, and people pass wind about 10 to 20 times a day. - [8](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/8/) — The nose makes mucus all the time, and most of it is swallowed without you noticing; it traps dust, pollen and germs before they reach the lungs. - [9](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/9/) — Green snot does not always mean bacteria: the colour comes from a substance in white blood cells fighting germs. - [10](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/10/) — A bogey is dried mucus around trapped dust; picking spreads germs to your fingers and on to others and can make the nose bleed. - [11](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/11/) — A sneeze is a reflex that clears the nose, and about 1 person in 4 also sneezes at bright light; fast-camera tests found the air much slower than the 160 kilometres an hour people say, but droplets can float several metres. - [12](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/12/) — The story that your eyes pop out if you sneeze with them open is not true; closing them is just a reflex. - [13](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/13/) — A hiccup is the diaphragm, the big breathing muscle under the lungs, suddenly jerking while the voice box snaps shut; eating fast, fizzy drinks or a full stomach can trigger it. - [14](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/14/) — An American man called Charles Osborne is reported to have hiccupped for about 68 years. - [15](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/15/) — Poo is about three-quarters water, and much of the rest is bacteria, undigested fibre and old cells from the gut lining; it is brown because of a pigment made from old red blood cells. - [16](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/16/) — Beetroot can turn poo and wee pink for a day, which is harmless. - [17](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/17/) — Doctors use a chart of seven poo types, from hard lumps to watery liquid; type 4, a smooth sausage, is ideal, and hard lumps mean you need more water and fibre. - [18](https://md.mova.elamur.ai/free/en/corpora/school/biology/364-the-body-s-rough-side-burps-farts-snot-sneezes-hiccups-and-poo/18/) — A tummy rumble is gas and liquid squeezed along the gut by its muscles, louder when the stomach is empty, and washing hands with soap for about 20 seconds removes most germs. - ← previous: [Sleep and dreams in people](https://md.mova.elamur.ai/free/en/corpora/school/biology/363-sleep-and-dreams-in-people/) - next →: [Tiny champions: the strongest beetle, the highest-jumping flea and the leggiest millipede](https://md.mova.elamur.ai/free/en/corpora/school/biology/365-tiny-champions-the-strongest-beetle-the-highest-jumping-flea-and-the-leggiest-millipede/) - ↑ back to [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/)