LAB respiration Flashcards
spirometer
an instrument used to measure respiratory volumes
tidal volume
unforced volume of air inhaled or exhaled during resting conditions
Average tidal volume
500 ml
inspiratory reserve volume (IRV) following a tidal inhale
The amount of air that can be inspired forcibly beyond the tidal volume
The average inspiratory reserve volume is
3100 ml
expiratory reserve volume (ERV) following a tidal exhale
The volume of air that can be forcefully exhaled
The average expiratory reserve volume is
1200 ml
the residual volume (RV)
volume that remains in the lungs following a forceful exhalation.
average residual reserve is
1200 ml
IRV and ERV and RV can all change with exrecise
true
inspiratory capacity
is the total amount of air that can be inspired after a normal tidal volume expiration, so it is the sum of TV and IRV
Inspiratory capacity is the sum of IRV and the TV
IRV and the TV average of 3600 ml
functional residual capcity
amount of air that remains in the lungs when you exhale a tidal breath
functional residual capacity is equal to
the sum of ERV and RV. an average of 2400 ml
RV doesn’t change with activity but may
increase with age as lung elasticity increases
Vital Capacity or VC
the maximum amount of air that can be exhaled after a maximal inhalation
Vital Capacity is the sum of the
VC = TV + IRV + ERV
Average Vital Capacity or VC
4800 ml
Total Lung Capacity or TLC
The sum of all of the lung volumes an average of 6000 ml
Minute Respiratory Volume MRV
The amount of air exchanged with the environment in one minute
MRV =
MRV = TV x breaths/min
To compute inspiratory reserve volume (IRV), one would need to know ________.
vital capacity, and expiratory reserve volume
tidal volume and vital capacity
tidal volume, vital capacity, and expiratory reserve volume
tidal volume, vital capacity, and expiratory reserve volume
Hyperventilation causes a ________ in the blood concentration of CO2, and thus ________ the rate of respiration.
decrease, decrease
What happens to your respiratory rate after breathing into the paper bag?
respiratory rate goes up because of air being breathed that’s high in Co2. Co2 stimulates respiratory rate.
Why does respiratory rate go up when breathing into a paper bag?
because breathing in an out that same air, will give you high Co2 and that high co2 will stimulate respiratory rate
after exercise respiratory rate goes up, why?
because when your using your muscles and having metabolic rate increase the biproduct is Co2 which increases respiratory rate.
What happens your ability to hold your breath after breathing into the paper bag?
You will hold your breath for less time because the paper bag increased your respiratory rate due to the increase in Co2
What happens to Breath holding after 4 big breaths in and big breaths out?
you will have less Co2 which will increase your respiratory rate and increase your ability to hold your breath
what happens to respiratory rate after exercise
exercise makes ATP. The biproduct of ATP is Co2. Co2 will increase respiratory rate.
what happens after big breaths in and out.
lower respiratory rate or Co2 are going down. and we will be able to holdour breath longer.
