Science Learning Hub logo
TopicsConceptsCitizen scienceTeacher PLDGlossary
Sign in
Video

What is snot?

Dr Joanna Kirman talks about snot. Although it seems disgusting, we learn snot is actually a good thing and is one of our weapons to fight disease. It is produced to clear the airways of infectious diseases and anything else that should not be there.

Transcript

DR JOANNA KIRMAN
Snot is a fantastic thing that our body makes in response sometimes to infectious diseases, sometimes it will make it in response to things like an asthmatic response. So snot is produced largely by the airways, and it’s designed to basically mop up things that either aberrantly end up in our airway system, or when we’ve got infectious diseases, we make a lot of snot to try and clear the airways of that infection.

It’s sticky and it kind of collects things and then you cough it up and you can get rid of that infectious organism. It is a good thing – you might not think it at the time when your nose is blocked, but it is – snot is one of our weapons to fight disease.

Acknowledgement:
Rob & Nils Wakefield
Sandi Daigle
Paul Clarke
Ian Applegate
Jon Burgess
Isaac Bell
Paul Clarke

Glossary

Rights: The University of Waikato
Published: 18 October 2010
Referencing Hub media

Explore related content

Appears inRelated resources
The body’s first line of defence

Article

The body’s first line of defence

Your body has a two-line defence system against pathogens (germs) that make you sick. Pathogens include bacteria, viruses, toxins, parasites ...

Read more
Making snot

Activity

Making snot

Snot is simply mucus that is produced by a special membrane in the nose. The purpose of snot is to ...

Read more
Dr Joanna Kirman

Article

Dr Joanna Kirman

Position: Associate Professor, Head of the School of Biomedical Sciences, Health Sciences University of Otago. Former Group Leader, Malaghan Institute ...

Read more
Fighting infection – introduction

Article

Fighting infection – introduction

We all get sick from time to time. Wintertime, in particular, brings with it colds and flus.

Read more
Making snot

Activity

Making snot

Snot is simply mucus that is produced by a special membrane in the nose. The purpose of snot is to ...

Read more

See our newsletters here.

NewsEventsAboutContact usPrivacyCopyrightHelp

The Science Learning Hub Pokapū Akoranga Pūtaiao is funded through the Ministry of Business, Innovation and Employment's Science in Society Initiative.

Science Learning Hub Pokapū Akoranga Pūtaiao © 2007-2025 The University of Waikato Te Whare Wānanga o Waikato