Q73 - Regional Blood Flow Redistribution During Strenuous Exercise
The following table describes the rate of blood flow to different parts of the body including brain, skin, intestines, and cardiac muscle at rest and during strenuous exercise.
| Part of the body | At rest (cm3/min) | During exercise (cm3/min) |
|---|---|---|
| I | 250 | 1200 |
| II | 500 | 500 |
| III | 500 | 1000 |
| IV | 2500 | 90 |
Using the information and data, determine which of the statements are true or which are false.
A. At rest, ATP of the cells of part I comes mainly from oxidation of fatty acid.
B. The activity of insulin receptors in the cells of part II is increased during exercise, enhancing glucose uptake.
C. The increase in blood flow to part III during exercise helps to regulate the body temperature.
D. Epinephrine decreases blood flow to part IV via β-receptor.
Question reproduced from IBO 2016, Theoretical Paper B, licensed under CC BY-NC-SA 4.0 - attributed to the International Biology Olympiad. Open the full exam PDF · Community solutions (unofficial)