Oxidative Metabolism- FAT Flashcards
what are the 3 types of fat cells
brown, beige and white
info on brown fat cells
more abundant in younger ages, found in upper clavicle, shoulders
info on white fat cells
stored all over. most abundant. can be broken down and circle through body
beige fat cells info
white cells that act like brown
how is fat stored in the body
as a triglyceride
what is beta oxidation
the process of converting FFAs to acetyl coA before entering Krebs Cycle
what is the number of cycles through beta oxidation dependent on
number of carbons on FFA
equation to find cycles in beta oxidation
n/2 -1
how many FADH2 and NADH+H+ do you get from a cycle of beta oxidation
1 of each
what does acetyl coa do after beta oxidation
follows the same path as CHO metabolism and enters kreb cycle
what is the least powerful metabolic pathway
beta oxidation
what is atp yield dependeont on in beta oxidation
number of carbons
equation to find # of cycles throguh kreb cycle
n/2
what are the two methods to get to kreb cycle
carb oxidation and fat oxidation
what are the two things we can start with to get to kreb cycle
glucose or lipids to acetyl coA to start kreb cycle
how much atp is produced from on molecule of a 16 C acid
106
what determines which energy is used
intensity and time
most powerful system to least
PCR
Glycolysis
CHO oxidation
Fat oxidation
most capacity to least
Fat oxidation
CHO oxidation
glycolysis
PCr
overall chem rxn of fat oxidation
ffa or triglyceride to
CO2 and H2O
do all muscles exhibit max ocidative capabiities
no
what determines oxidative capacity
enzyme activity
electron carrier availability
fiber type composition
endurance trainin g
mitochondira density
capillary density
oxygen availabiltiy vs o2 needed
what is the biggest thing that effects oxidative capacity
ENZYME activityyyy
are type 1 fibers have a greater or lesser oxidative capacity
greater
what does type 1 fibers have more of
mitochondira and
higher oxidative enzyme concentrations
what are type 2 fivers better for
glycolytic energy production
what does endurance traiing do to type 2 fibers
enhances oxidative capacity
develops more or larger mitochondira
and
develops more oxidative enzymes
is o2 storage limited
yes
what does the o2 levels entering and leaving the lungs tell us
an estimate of o2 use in muscles
atpe demand of muscle increases with intensity , so in response what happens
increase in rate of oxidative atp production
increase in 02 intake at lungs
increase in o2 delivery by the heart and vessels
