During exercise, the amount of ____________ carried in the blood to the muscles increases.
answer
oxygen
question
During exercise, stored chemical energy is converted to energy that can be used for
answer
muscle movement
question
How is blood flow related to lung function during exercise?
answer
Blood vessels are dilated to increase the amount of oxygen carried in the blood, and the lungs work harder to meet the body's oxygen demands.
question
Even though Alexandra could talk with her friends during dance class, she couldn't sing along to the songs. Which best describes her heart rate during this activity?
answer
Moderate
question
Amber finds herself struggling to have a conversation with her friend while they are hiking. Which of these modifications should she make?
answer
She should slow down in order to bring her heart rate back to a safe level.
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