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Questions and Answers
Which substrates can the heart utilize for ATP production?
Which substrates can the heart utilize for ATP production?
- Glucose and pyruvate
- Free fatty acids, triglycerides, and ketones
- Lactate
- All of the above (correct)
What percentage of cardiac ATP is accounted for by fatty acid oxidation in adults?
What percentage of cardiac ATP is accounted for by fatty acid oxidation in adults?
- 30% to 60%
- 60% to 90% (correct)
- 90% to 100%
- 10% to 30%
Which metabolic pathway can be mobilized to provide extra substrate under conditions of stress-mediated via increased sympathetic stimulation?
Which metabolic pathway can be mobilized to provide extra substrate under conditions of stress-mediated via increased sympathetic stimulation?
- Glycolysis (correct)
- Krebs cycle
- Oxidative phosphorylation
- Creatine phosphate
