Questions and Answers
How is blood flow related to lung function during exercise?
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.
Which best describes the heart rates of Victoria and her friends while walking around the track after school?
During exercise, stored chemical energy is converted to energy that can be used for?
Muscle movement.
How does breathing change during exercise?
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What modification should Amber make while hiking to have a better conversation with her friend?
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Study Notes
Blood Flow and Lung Function
- Blood vessels dilate to enhance oxygen transportation during exercise.
- Increased lung activity is necessary to fulfill heightened oxygen demands of the body during physical exertion.
Heart Rate During Light Activity
- Heart rates are generally low when engaging in casual activities, like walking and laughing with friends.
Energy Conversion
- Physical exercise leads to the transformation of stored chemical energy into usable energy for muscle movement.
Breathing Changes During Exercise
- Both the rate and depth of breathing rise significantly during exercise to supply the body with adequate oxygen.
Modifying Activity for Heart Rate
- To maintain a safe heart rate while hiking, individuals should consider slowing down their pace, especially if struggling to converse.
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Description
Test your knowledge on how blood flow and heart rates are affected during exercise. These flashcards cover key concepts that are essential for understanding the physiology of physical activity. Join Victoria and learn about the body's responses to exercise and the importance of oxygen delivery.
