Three Reasons For The Degree Of Exercise And The Pulse Rate
Explanation : - Pulse rate increases means the heart rate increases. - Heart rate increases means the frequency of the beating of heart increases. - Three reasons for the rise in pulse rate when the degrees of exercise increase.
Reason ⅰ : To remove lactic acid in blood and skeletal muscle cells
When the degrees of exercise increase,
→ The skeletal muscles contract more frequently.
→ Not enough oxygen is supplied to the skeletal muscles for aerobic respiration.
→ Skeletal muscle cells carry out anaerobic respiration to generate additional amount …show more content…
→ Rate of respiration of the skeletal muscle cells increases in order to produce more energy for the rapid contraction of the skeletal muscles.
→ Rise in the rate of respiration of the skeletal muscle cells increase the production of carbon dioxide.
→ Frequency of heartbeat increase (i.e. pulse rate increases)
→ Cardiac output increases.
→ More blood flow to the lungs and blood vessels in skeletal muscles.
→ Rate of gas exchange rises to increase the removal of carbon dioxide generated by the skeletal muscle cells to prevent the drop in pH in blood.
Conclusion 2 : The degrees of exercise and the systolic pressure are positively related. That means the systolic pressure increases when the degrees of exercise increase.
- Systolic pressure is the maximum blood pressure in arteries.
- When degrees of exercise increase, the heart pumps blood quickly and with greater force.
→ Cardiac output increases.
→ More blood flow through the arteries and exert a grater force on the artery walls.
→ Systolic pressure …show more content…
Explanation : - Diastolic pressure is the minimum blood pressure in arteries. - Diastolic pressure is measured when the whole heart relaxes.
- Blood is flowing into the heart to fulfill the atria and ventricles from the veins during the relaxation of heart.
- No matter it is resting or exercising, the blood pressure in arteries during the diastole of the heart will not have a big change.
i.e. Even the levels of exercise increase, the diastolic pressure will not fluctuate a lot.
i.e. The diastolic pressure is always keep constant.
Conclusion 4 : The increase in pulse rate is greater than the increase in systolic pressure when the degrees of exercise increase.
- From the graph, the pulse rate is lower than the systolic pressure when a person is at rest.
- Both of the pulse rate and systolic pressure increase when the levels of exercise increase.
- The pulse rate is higher than the systolic pressure after a person did severe exercise.
i.e. When the degrees of exercise rise, the increase in pulse rate is greater than the increase in systolic pressure.