Chapter 8-1c Muscle Metabolism Flashcards
what three ways do the muscles get ATP for the contraction cycle?
creatine phosphate
anaerobic glycolysis
aerobic respiration
explain direct phosphorylation and how long does the energy last?
ATP is created from borrowing a phosphate from creatine
energy can last about 15 seconds
what is the stored glucose in the muscle called?
glycogen
when creatine phosphate is depleted, what source of ATP does the muscle use next?
anaerobic glycolysis
what does myoglobin store in the muscle?
oxygen
explain anaerobic glycolysis
glucose breaks down into two pyruvic acids, which produced 2 ATP
how long will the energy from anaerobic glycolysis last?
about 2 minutes
what does pyruvic acid become if no oxygen is present?
lactic acid
what happens to the muscle with a build up of lactic acide?
muscle fatigue
where does aerobic cellular respiration occur?
in the mitochondria with the krebs cycle and an electron transport chain
how much ATP can be produced from aerobic cellular respiration?
30-32 ATP
how long can energy last from aerobic cellular respiration?
several minutes to hours
where does ATP come from in the pink highlighted section
energy comes from ATP stored in the muscle
where does ATP come from in the pink highlighted section
direct phosphorolation
where does ATP come from in the pink highlighted section
anaerobic glycolosis
where does ATP come from in the pink highlighted section
aerobic respiration
