INTRODUCTION
CELL STRUCTURE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
water concentration in the blood increases
|
|
|
blood cells require increase oxygen as energy is expended
|
|
|
muscle cells increase in temperature and require fluid to reduce temperature
|
|
|
an increase in muscle activity causes increases in glucose levels in red blood cells
|
Detailed explanation-1: -Which statement best explains the increase in the heart rate and the breathing rate during exercise? The water concentration in the blood increases.
Detailed explanation-2: -When you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide. To cope with this extra demand, your breathing has to increase from about 15 times a minute (12 litres of air) when you are resting, up to about 40–60 times a minute (100 litres of air) during exercise.
Detailed explanation-3: -Aerobic activity makes you breathe harder and your heartbeat faster. As a result, increases heart and lung fitness. Examples include brisk walking, dancing, cycling, jogging, swimming and playing basketball.
Detailed explanation-4: -Breathing rates remain elevated immediately following aerobic exercise. Rapid breathing continues to move oxygen through the lungs and ultimately, into the bloodstream and to the muscles.