Using the following data: Please answer the questions below: 1. When skeletal mu
ID: 72390 • Letter: U
Question
Using the following data: Please answer the questions below:
1. When skeletal muscle becomes active, blood flow to the muscle increases in proportion to metabolic activity (exercise hyperemia).
A. Describe the mechanisms of exercise hyperemia (hint: look in your text).
B.What factors regulate the blood flow locally in skeletal muscle during exercise?
2. As you walked uphill, your breathing may have become deeper (hyperpnea).
a. Do you think that blood oxygen and carbon dioxide levels changed? Now explain your answer.
b. This is an example of which phenomenon in physiology?
3. At each elevation you have two measurements: heart rate and respiratory rate.
A. Describe the form and shape of the scatterplot.
B. Summarize in one sentence what the plot tells you about the relationship between heart rate and respiratory rate.
More details would be better. thanks
Location Description Time Distance from start (km) elevation (m) Heart Rate (beats/15 seconds) Respriation Rate (breaths/15 seconds) 1 Parking Lot 4 10:15 0 201 85 20 2 Top of First Hill 10:40 1.32 284 150 28 3 Bottom of Second Hill 10:55 1.61 239 128 24 4 Top of Second Hill 11:12 2.76 385 180 30 4a Top of Second Hill 11:12 2.76 385 180 30 after 5 minute rest 11:17 2.76 385 150 28 5 Discovery Monument 11:28 3.75 372 140 25Explanation / Answer
1A. exercise hyperemia requires adjustments in heart rate and respiratory rates.with increase in muscle activity vasodilation and increased rate of blood flow occurs in the contracting skeletal muscles.on the other hand vasocontriction occurs in peripheral organs to redistribute that amount of blood to the contracting muscles.these increased flow of blood to the skeletal muscles requires increased heart rate
B. the increased blood flow is regulated by the following factors;
(i) vasodilation of the local skeletal muscles
(ii)vasocontrictiom of peripheral organs
(iii) increased heart rate to pump more blood
2a.yes the blood oxygen level and carbon dioxide levels changes in higher altitudes.while walking uphill the atmospheric O2 level decreases so nrml breathing rate will not cause suffient O2 to reach cells hence deep breathing occurs and the body makes more RBCs to deliver required amount of blood to the tissues.production of CO2 also increases.
b. the less blood flow in higher altitudes is known as hypoxia which may cause mountain sickness.this is overcomed by physiological adjustments
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