In cases of brief caloric restriction, such as fasting for less than 24 hours, the body responds by adjusting its metabolic processes to maintain energy balance. Here's how the body would likely respond to each of the options you've listed:

a. Inhibition of hepatic glycogenolysis: False. Hepatic glycogenolysis, the process of breaking down glycogen stored in the liver into glucose, would actually increase during a short-term fast to provide the body with a source of energy.

b. Decreased gluconeogenesis in the skeletal muscle: True. Skeletal muscle does not contribute significantly to gluconeogenesis, the process of producing glucose from non-carbohydrate sources. This process mainly occurs in the liver and, to a lesser extent, in the kidneys.

c. Decreased pancreatic secretion of glucagon into the blood: False. Glucagon levels would actually increase during a fast. Glucagon is a hormone that raises blood sugar levels by stimulating glycogenolysis and gluconeogenesis and inhibiting glycogenesis.

d. Increased activity of gluconeogenesis in the liver: True. As glycogen stores in the liver become depleted, the liver increases gluconeogenesis to produce more glucose and maintain blood sugar levels.

e. Increased skeletal muscle glycogenolysis: False. Skeletal muscle glycogen is typically used for local muscular activity and is not a significant source of glucose for other tissues or for maintaining blood glucose levels.

f. Increased glycogen synthase activity in the liver: False. Glycogen synthase, the enzyme that synthesizes glycogen, would be less active during a fast because the body is breaking down glycogen, not synthesizing it.

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In cases of brief caloric restriction, such as fasting for less than 24 hours, the body responds by adjusting its metabolic processes to maintain energy balance. Here's how the body would likely respond to each of the options you've listed:

a. Inhibition of hepatic glycogenolysis: False. Hepatic glycogenolysis, the process of breaking down glycogen stored in the liver into glucose, would actually increase during a short-term fast to provide the body with a source of energy.

b. Decreased gluconeogenesis in the skeletal muscle: True. Skeletal muscle does not contribute significantly to gluconeogenesis, the process of producing glucose from non-carbohydrate sources. This process mainly occurs in the liver and, to a lesser extent, in the kidneys.

c. Decreased pancreatic secretion of glucagon into the blood: False. Glucagon levels would actually increase during a fast. Glucagon is a hormone that raises blood sugar levels by stimulating glycogenolysis and gluconeogenesis and inhibiting glycogenesis.

d. Increased activity of gluconeogenesis in the liver: True. As glycogen stores in the liver become depleted, the liver increases gluconeogenesis to produce more glucose and maintain blood sugar levels.

e. Increased skeletal muscle glycogenolysis: False. Skeletal muscle glycogen is typically used for local muscular activity and is not a significant source of glucose for other tissues or for maintaining blood glucose levels.

f. Increased glycogen synthase activity in the liver: False. Glycogen synthase, the enzyme that synthesizes glycogen, would be less active during a fast because the body is breaking down glycogen, not synthesizing it.

Knowee AI · Accepted Answer

In cases of brief caloric restriction, such as fasting for less than 24 hours, the body responds by adjusting its metabolic processes to maintain energy balance. Here's how the body would likely respond to each of the options you've listed:

a. Inhibition of hepatic glycogenolysis: False. Hepatic glycogenolysis, the process of breaking down glycogen stored in the liver into glucose, would actually increase during a short-term fast to provide the body with a source of energy.

b. Decreased gluconeogenesis in the skeletal muscle: True. Skeletal muscle does not contribute significantly to gluconeogenesis, the process of producing glucose from non-carbohydrate sources. This process mainly occurs in the liver and, to a lesser extent, in the kidneys.

c. Decreased pancreatic secretion of glucagon into the blood: False. Glucagon levels would actually increase during a fast. Glucagon is a hormone that raises blood sugar levels by stimulating glycogenolysis and gluconeogenesis and inhibiting glycogenesis.

d. Increased activity of gluconeogenesis in the liver: True. As glycogen stores in the liver become depleted, the liver increases gluconeogenesis to produce more glucose and maintain blood sugar levels.

e. Increased skeletal muscle glycogenolysis: False. Skeletal muscle glycogen is typically used for local muscular activity and is not a significant source of glucose for other tissues or for maintaining blood glucose levels.

f. Increased glycogen synthase activity in the liver: False. Glycogen synthase, the enzyme that synthesizes glycogen, would be less active during a fast because the body is breaking down glycogen, not synthesizing it.

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