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

question 3

Multiple Choice

Why does breathing continue to be rapid and deep for a time after heavy exercise?
8-7-2013

• 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:

Tides

Regular, periodic variations in the sea level caused by the gravitational pull of the moon and sun on Earth's oceans.

Storms

Severe weather phenomena characterized by strong winds, heavy rain, thunder, lightning, or snow.

Seafloor Slope

The gradient or incline of the ocean floor away from the continental shelf towards the deeper ocean basin.

Shoreline

The boundary line where land meets ocean or sea, often changing due to tides and erosion.