In a fight-or-flight situation, epinephrine promotes glycogen breakdown in the l

Question

In a fight-or-flight situation, epinephrine promotes glycogen breakdown in the liver and skeletal muscle. Epinephrine signaling supplements the body's energy supplies to support physical activity. Select the statements that describe the effects of epinephrine on carbohydrate metabolism in muscle andd liver cells. Liver cells can transport glucose 6-phosphate across the plasma cell membrane and into the bloodstream. Pyruvate metabolism regenerates stores of creatine phosphate in skeletal muscle cells. Pyruvate conversion to lactate regenerates NAD+ for glycolysis in muscle cells. Pyruvate can cross the skeletal muscle plasma cell membrane for exchange with other muscle cells glucose levels. nownrees bod

Explanation / Answer

option c describes the effects of epinephrine on carbohydrates metabolism in muscle and liver cell. When sufficient oxygen is not present in the muscle cells for further oxidation of pyruvate and NADH produced in glycolysis, NAD+ is regenerated from NADH by reduction of pyruvate to lactate. Pyruvate is converted to lactate by the enzyme lactate dehydrogenase.

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