Muscle glycogenolysis is higher during exercise in the heat partly because:Group of answer choicesplasma adrenaline levels are increasedskeletal muscle blood flow is reducedmuscle temperature is lower
Question
Muscle glycogenolysis is higher during exercise in the heat partly because:Group of answer choicesplasma adrenaline levels are increasedskeletal muscle blood flow is reducedmuscle temperature is lower
Solution
Muscle glycogenolysis is higher during exercise in the heat partly because plasma adrenaline levels are increased.
Here's a step-by-step explanation:
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Exercise in the heat causes the body to produce more heat, which in turn increases the body's core temperature.
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This increase in core temperature triggers the adrenal glands to release more adrenaline (also known as epinephrine).
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Adrenaline is a hormone that, among other things, stimulates glycogenolysis in the muscles. Glycogenolysis is the process of breaking down glycogen into glucose, which is used as a source of energy.
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Therefore, the increase in adrenaline levels during exercise in the heat leads to an increase in muscle glycogenolysis.
It's important to note that while skeletal muscle blood flow may be reduced and muscle temperature may be higher during exercise in the heat, these factors do not directly cause an increase in muscle glycogenolysis.
Similar Questions
During exercise of increasing intensity there is a greater reliance on muscle glycogenolysis due to local factors and increased levels of this hormone:Group of answer choicesadrenalineinsulinglucagon
Why does muscle activity affect the temperature of the body?Multiple ChoiceThe rate of chemical reactions increases in muscle fibers during contraction, so the rate of heat production also increases.Muscle contraction generates pyrogens, which reset the body's internal thermostat to a higher temperature.Muscle activity directs more warm blood to the muscles away from the central core, causing a cooling effect on your internal organs.Increased muscle activity causes a rise in adipose stores, which increases the insulation value of the body.
The hierarchy of priority for blood flow during prolonged exercise in the heat is:Group of answer choicesbrain > muscle > skinskin > brain > musclemuscle > brain > skin
Heat acclimation is frequently added to training regimens. Adaptations to heat that have the potential to improve athletic performance as a consequence of heat adaptations include:(Select all that apply, even if only one applies)Group of answer choicesIncreased cardiac outputIncreased skin blood flowLower sweat thresholdIncreased thermogenic capacityPlasma expansionLower resting heart rate
Muscle glycogen metabolism is disproportionally highGroup of answer choicesduring late exercisewhen exercise intensity is highwhen blood glucose levels are highwhen exercise intensity is low
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