Factors Affecting O2 Consumption Flashcards
How specifically do most animals follow allometric scaling? (3)
- inter-species comparisons
- development within same species
- cellular level
What is whole animal MR?
- MR proportional to body mass
(increases with size)
What is mass specific MR?
- inversely proportional to body mass (decreases with size)
Whats the difference in MO2 during life stage?
- eggs have low MO2 (increases post hatch)
- MO2 juveniles > MO2 adult
Why is MO2 juveniles > MO2 adult?
they’re growing
What is standard MR?
- baseline MR
What is specific dynamic action (SDA)?
- heat increment of feeding (digestion + assimilation)
What is standard rate?
- SMR at rest
What is active rate?
- max MR (MMR)
How do you calculate scope for activity/aerobic scope?
MMR - SMR
Higher activity = ____ MR
higher
MO2 is ____ to red muscle activity. What does this mean?
- proportional
- if red muscle activity increases, so does MO2
SMR ____ with temp
- increases
What is Q10?
- change in MR for every 10 degree C increase in temp
What is the main factor to performance in temp increase differences across species?
- thermotolerance/temp tolerance
What is Pcrit?
- indication of hypoxia intolerance
What does a high Pcrit mean?
- less hypoxia intolerance
How do oxy-regulators maintain MO2?
- increase ventilation
MO2 ____ below Pcrit
- reduced
At Pcrit, MO2 ____ with PO2 ___.
-decrease x2
Below Pcrit, oxy-conformers are ___. This leads to ___.
- unable to meet O2 demand
- death