During exercise,the initial rapid increase in breathing rate appears to be primarily because of

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Quizplus · Accepted Answer

The initial rapid increase in breathing rate during exercise is primarily due to collateral sensory input from the skeletal muscles and joints during limb movements. This input stimulates the respiratory centers in the brain, which increases the rate and depth of breathing. Increased blood carbon dioxide levels, decreased blood oxygen levels, and decreased blood pH levels can also contribute to increased breathing rate during exercise, but they do not appear to be the primary cause of the initial rapid increase.

During Exercise,the Initial Rapid Increase in Breathing Rate Appears to Be