Maximum vital lung capacityGroup of answer choicesdeclines by 5 percent per decade throughout the lifespan.increases by 10 percent per decade after age 25.declines by 10 percent per decade after age 25.remains constant until about age 50.
Question
Maximum vital lung capacityGroup of answer choicesdeclines by 5 percent per decade throughout the lifespan.increases by 10 percent per decade after age 25.declines by 10 percent per decade after age 25.remains constant until about age 50.
Solution
The maximum vital lung capacity declines by 10 percent per decade after age 25. This is because as we age, our lung tissue loses its elasticity and the muscles that control breathing may become weaker. Additionally, the diaphragm, which assists in breathing, may become less efficient. These factors contribute to a decrease in the maximum amount of air our lungs can hold and use for oxygen exchange, which is known as our vital lung capacity.
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