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What causes the burning pain we feel in our muscles during strenuous exercise?
The burning pain in our muscles during strenuous exercise is caused by the buildup of lactic acid, a byproduct of the body's energy production process when oxygen levels are low. This buildup can lead to muscle fatigue and discomfort.
Why can exercise be dangerous during pregnancy?
It's not unless you do things too strenuous. Exercise is encouraged.
What percentage of your blood goes to your muscles during strenuous exercise?
>95%
Why does strenuous activity cause the heart to beat faster?
Strenuous activity causes the heart to beat faster because the body needs more oxygen and nutrients during physical exertion. The heart pumps faster to deliver these essential resources to the muscles and organs working hard during exercise.
What substance is produced anaerobically during strenuous activity?
Alcohol (and CO2), or Lactic Acid
Why is excess pyruvic acid produced during prolonged strenuous exercise?
Excess pyruvic acid is produced during prolonged strenuous exercise because the body relies more heavily on anaerobic respiration due to the insufficient supply of oxygen to meet energy demands. This causes an accumulation of pyruvate, the end product of glycolysis, which is then converted to lactic acid in order to regenerate NAD+ for continued ATP production.
What are physiological factors that are results of warming up?
Warming up (light exercise before more strenuous exercise) results in vasodilation of the skeletal circulation. This causes increased blood supply to the skeletal muscle to satisfy the oxygen and nutrient demands of the increased metabolic activity of the muscle during exercise.
Does muscle fibers brake down during exercise?
Yes. Strenuous exercise can kill the muscle fibers. Such muscle fibers are replaced by fibrous tissue.
Why is it normal for a student-athlete's heart to beat quickly during and after strenuous exercise?
During and after strenuous exercise, a student-athlete's heart beats quickly to pump more oxygen-rich blood to the muscles and organs that need it. This helps the body meet the increased demand for energy and oxygen during physical activity.
What happens in a Valsalva maneuver?
During this maneuver, a person performs the "breathe-in-bear-down" movement that is automatically performed during strenuous exercise
Which additional muscles of the thoracic wall are used for more forceful inspiration and expiration during strenuous exercise?
innermost layer
When a muscle becomes anaerobic during strenuous exercise why is it necessary to convert pyruvate to lactic acid?
to decrease the NADH and increase the NAD+
