B1.2.3 - Breathing Flashcards
What happens to the volume of the lungs when you are breathing out?
It decreases
Which muscles relax during exhalation
Intercostal (rib) muscles
Diaphragm
Inhalation means…
breathing in
The scinetific term for breathing is…
ventilation
Which muscle contract during inhalation?
Intercostal (rib) muscles
Diaphragm
What happens to the volume of the lungs when you are breathing in?
It increases
Exhalation means…
breathing out
What happens to the intercostal muscles when they relax?
They move the ribcage down and in
What happens to the intercostal muscles when they contract?
The move the ribcage up and out
What happens to the pressure in your lungs, causing you to breath in during inhalation?
It decreases
What happens to the diaphragm when it contracts?
It flattens (moves down)
What happens to the diaphragm when it relaxes?
It moves up
Do muscles contract or relax when you breath out?
Relax
Do muscles contract or relax when you breath in?
Contract
What happens to the pressure in your lungs, causing you to breath out during exhalation?
It increases
Compare what happens in the lungs when a human breathes in and out.
- Ribcage moves up when we breathe in and
- moves down when we breathe out.
- Diaphragm moves down/contracts when we breathe in
- and moves up/relaxes when we breathe out.
- Chest volume increases when we breathe in
- and decreases down when we breathe out.
