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Breathe Deeply ...

The lungs are the major organs responsible for getting oxygen into the blood and removing carbon dioxide as a person breathes. Breathing is the movement of gases into and out from the lungs, and is also called ‘ventilation’. Breathing in is called ‘inhaling’, and breathing out is called ‘exhaling’.

Chest X-Ray

When a doctor needs to see something inside of your body, they might use an X-ray exam. An X-ray machine makes X-rays and directs them towards you. The X-rays pass through some parts of the body but are blocked by other parts. Solid objects like your bones will show up white while softer substances like your lung tissue or muscles will look grey. The air in your lungs will look black.

Image Credit: Irena Wojsyk-Banaszak and Anna Bręborowicz, University of Medical Sciences, Poznań, Poland and Katarzyna Jończyk-Potoczna (CC BY 3.0 licence)

lungs open 1 lungs closed

A look inside the lungs

Air is drawn into the body through the mouth and nose, and then travels down the trachea (also called the windpipe) into a bronchus (there are two bronchi, leading into each lung). The bronchus then splits into many narrow bronchioles that finally end in the microscopic air sacs called alveoli. This is where gas exchange takes place, oxygen being absorbed into the blood, carbon dioxide moving in the opposite direction. The air is then breathed out.

Slide the arrows on the image to see inside the lungs model.

Image Credit: SOMSO® model from Adam,Rouilly

How do your Lungs Work?

Here's a short video on how the lungs function along with a "Did You Know" Fact or two ...

Did You Know?

The lungs are the only organs that can float on water (can you suggest a reason why?) Horses only breathe through their noses

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT …

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT …

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT …

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT …

How is breathing rate affected by exercise?

Your Task

  • Sit quietly for 5 minutes, breathing normally.
  • Count how many breaths you take in 30 seconds (a breath is counted by breathing in and then breathing out).
  • Multiply this number by 2 to find out how many breaths you take at rest.
  • Repeat this two more times (give yourself a short break between each count) so that you have 3 values.
  • Add your 3 values together and divide by 3 to find out your average breathing rate (breaths per minute).
  • Now carry out 2 minutes of intense exercise (such as running on the spot).
  • Sit down immediately, and count the number of breaths per 30 seconds (and then multiply by 2 to discover the new breathing rate).

How has the rate changed? Can you think of a reason why this might have happened?

– MISSION END –

– MISSION END –

– MISSION END –

– MISSION END –

Your Journey So Far …

Tanno and Iguda have explored these places up to now. You can go back and visit again by clicking below.

Mouth

Stomach

Small Intestine

Large Intestine

Blood

Heart

Lungs

Great to see you here, thank you for the visit! See you next time …

Tanno & Iguda