pratical anatomy Flashcards
(12 cards)
rate of oxygen consumption + co2 production are directly related to …..
rate of energy expenditure
when is this only true
sub maximal exercise
why might the volume of air that entered the lungs be greater than the volume of expired air measured in Douglas bag
contribution of other substrates like fatty acids
as during oxidation not all o2 mulches consumed are replaced with co2
how do you calculate the Haldane transformation
calculate the proportional change of nitrogen between inspired and expired air
what does the Haldane transformation show
absolute nitrogen present won’t change
so shows overall gas volume change
constant value of N2 in inspired air
79.04%
what does a peak flow show
max rate of air movement during forced expiration
what can result from peak flow indicate
level of airway obstruction
how many L of air are the lungs capable of exchanging per min
120-170
during exercise what lung vol has the biggest impact on increased ventilation
tidal volume
at REST how many L of air are exchanged per min
6-8
what is more economic
1) ‘ TV high, frequency low’
or
2) ‘TV low, frequency high’
1
