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Metabolic Regulation 1: Which of the following statements is NOT true about metabolism?
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Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism
Metabolic Regulation 1
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In human physiology, which hormone is a major regulator of the overall rate of metabolism (basal metabolic rate)?
A
Thyroid hormone (triiodothyronine, , and thyroxine, )
B
Glucagon
C
Epinephrine (adrenaline)
D
Insulin
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Understand the concept of basal metabolic rate (BMR), which is the rate at which the body uses energy while at rest to maintain vital functions such as breathing and circulation.
Recall that hormones regulate metabolism by influencing how cells convert nutrients into energy and how they use that energy.
Identify the hormones listed: glucagon, epinephrine (adrenaline), insulin, and thyroid hormones (triiodothyronine, T\_3, and thyroxine, T\_4).
Recognize that thyroid hormones (T\_3 and T\_4) are primarily responsible for regulating the overall rate of metabolism by increasing oxygen consumption and heat production in tissues, thus affecting BMR.
Conclude that among the options, thyroid hormones are the major regulators of basal metabolic rate, while glucagon, epinephrine, and insulin have more specific roles in energy mobilization and storage rather than overall metabolic rate.
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