Why Does Breathing Continue to Be Rapid and Deep for a Time

question 15

Multiple Choice

Why does breathing continue to be rapid and deep for a time after heavy exercise?

• A) Extra oxygen is needed to eliminate lactic acid and restore muscle creatine phosphate and glucose concentrations.
• B) The respiratory system is slow to increase and decrease its function before and after exercise, which is why it takes awhile for breathing to slow down.
• C) Lactic acid that builds up during heavy exercise must be exhaled into the air, so heavy breathing must continue for awhile after exercise to eliminate it.
• D) The ATP level in muscle cells falls drastically during heavy exercise, and extra oxygen is needed to restore it.
• E) The extra ventilation is not needed to replenish energy stores in muscle fibers, but rather simply to restore the blood pH to normal after the production of excess lactic acid during the exercise.

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Definitions:

Alpha Level

The threshold of significance in hypothesis testing, representing the probability of making a Type I error.

Confidence Interval

A range of values, derived from sample statistics, used to estimate the true parameter of a population with a specified level of confidence.

Null Hypothesis

A statement in statistical hypothesis testing that proposes no significant difference or effect, assumed true until evidence suggests otherwise.

Two-Tail Test

A statistical test where the critical area of a distribution is two-sided and tests whether a sample is either greater than or less than a certain range of values.