Lung Volumes Flashcards
What is the movement of air into the lungs called?
Inspiration
What is the movement of air out of the lungs called?
Expiration
What is the tidal volume?
Volume of air inspired or expired per breath
How do you calculate minute ventilation?
Number of breaths (per min) x tidal volume
What is the approximate tidal volume at rest?
0.5 litres
What is the formula to calculate minute ventilation at rest?
12 breaths/min x 0.5 litres = 6 litres/min
What is inspiratory reserve volume (IRV)?
Volume of air that can be forcibly inspired after a normal breath
What is expiratory reserve volume (ERV)?
Volume of air that can be forcibly expired after a normal breath
What happens to tidal volume during exercise?
It increases
What is residual volume?
The amount of air that remains in the lungs after maximal expiration
What is the effect of exercise on residual volume?
Remains the same
What is the effect of exercise on minute ventilation?
Big increase
Fill in the blank: The volume of air breathed in or out per minute is referred to as _______.
minute ventilation
True or False: The expiratory reserve volume decreases during exercise.
False
List the different parts of total lung volume that can change during exercise.
- Tidal volume
- Inspiratory reserve volume
- Expiratory reserve volume
- Minute ventilation
What is a key study hint regarding exams?
Do not use abbreviations in the exam
What remains constant in terms of lung volume during exercise?
Residual volume
What happens to the depth of breathing during exercise?
Increases
What is the purpose of the lungs’ structure, such as cartilage rings?
To keep the alveoli, bronchi, and trachea open permanently
What is the volume of air breathed in or out per breath called?
Tidal volume
Explain how you can determine your inspiratory reserve volume.
Take a normal breath in and then take an additional breath in until your lungs feel full
Explain how you can determine your expiratory reserve volume.
Breathe out normally and then breathe out further as much as you can
