AVS-4160 Lecture Notes - Lecture 9: American Quarter Horse Association, Acidosis, Aerobic Exercise
24 Sep 2016
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Document Summary
The concentration of reducing equivalents controls the efficiency of the krebs cycle. When exercise begins, calcium is released from the muscle. At rest, beta oxidation has slowed because atp demand is low. dep = dephosphorylation. The more activity the body has, the faster dephosphorylation occurs. Keeping the pyruvate inactive increases the opportunity for fatty acids to be used. If a muscle becomes too acidic, it will no longer be able to contract. Type 2 muscle fibers do not have many mitochondria. The cori cycle converts lactic acid to something that is less damaging. The glucose that is made in the cori cycle can be stored or used immediately. The cori cycle is especially active immediately following exercise. The efficiency of the cori cycle during exercise dictates how long exercise can endure. A depletion of substrate for energy production leads to slower atp production rates.
