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Among the body's organs, the basal metabolic rate is divided unevenly. Which organ system receives the largest single share of that resting energy budget?
AThe skeletal muscles
BThe kidneys alone
CThe heart itself
DThe liver and spleen
Answer & Solution
Correct answer: D. The liver and spleen
1. The basal metabolic rate is divided among several organ systems in the body.
2. The largest single fraction of this resting energy goes to the liver and spleen, with the brain receiving the next largest share.
3. Skeletal muscle, the kidneys, and the heart each consume a meaningful share of the resting energy budget, but none of them receives the largest fraction.
4. This distribution holds specifically at rest, since vigorous exercise shifts much more energy toward the skeletal muscles and heart.
_Source: OpenStax College Physics (CC BY 4.0), Ch 7 "Work, Energy, and Energy Resources", section 7.8 Work, Energy, and Power in Humans_
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