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Metabolism and Energy Balance Practice Questions
Gebruik de 32 oefenvragen om jezelf voor te bereiden en te testen of je de leerstof kent.
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DownloadWhat is the glucostatic theory?
Omdraaien
The glucostatic theory proposes that the maintenance of glucose availability is crucial for life because glucose is the most important energy substrate for the brain.
What is the lipostatic theory?
Omdraaien
The lipostatic theory suggests that the amount of fat in the body is regulated to maintain energy stores. All the storage tissue in the body is fat.
How does ghrelin regulate hunger?
Omdraaien
Ghrelin is released when the stomach is empty and initiates a meal. As soon as the concentration of ghrelin goes down, you stop eating. This is a short-term regulation of hunger.
How does melanin affect appetite?
Omdraaien
Melanin blocks aMSH, a hormone that suppresses appetite. When melanin blocks aMSH, the MC4 receptor is left open, leading to increased food intake. This also increases dopamine levels, giving a pleasurable feeling when eating.
How do stretch receptors in the stomach signal satiety?
Omdraaien
Stretch receptors in the stomach signal satiety as the stomach expands during meals. The release of cholecystokinin (CCK) is triggered by fatty acids, peptides, and aromatic amino acids, which signals the brain to stop eating and activates digestion enzymes in the pancreas. This is a short-term regulation of satiety.
What is the role of leptin in energy balance?
Omdraaien
Leptin acts as a negative feedback signal between adipose tissue (fat) and the brain. When you eat more, fat levels increase, and leptin is released, telling the brain to stop eating and reducing food intake. This is a long-term regulation of energy balance.
What happens when leptin levels are low?
Omdraaien
Low leptin levels lead to decreased energy and metabolism, resulting in a feeling of weakness.
What happens in leptin-deficient mice (Obob mouse)?
Omdraaien
Leptin-deficient mice do not release leptin, leading to no reduction in food intake. This causes obesity in Obob mice.
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What is the glucostatic theory?
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The glucostatic theory proposes that the maintenance of glucose availability is crucial for life because glucose is the most important energy substrate for the brain.
Jouw antwoord:
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Vraag:
What is the lipostatic theory?
Vul het antwoord in:
Controleer antwoordAntwoord:
The lipostatic theory suggests that the amount of fat in the body is regulated to maintain energy stores. All the storage tissue in the body is fat.
Jouw antwoord:
input text value
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Vraag:
How does ghrelin regulate hunger?
Vul het antwoord in:
Controleer antwoordAntwoord:
Ghrelin is released when the stomach is empty and initiates a meal. As soon as the concentration of ghrelin goes down, you stop eating. This is a short-term regulation of hunger.
Jouw antwoord:
input text value
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Vraag:
How does melanin affect appetite?
Vul het antwoord in:
Controleer antwoordAntwoord:
Melanin blocks aMSH, a hormone that suppresses appetite. When melanin blocks aMSH, the MC4 receptor is left open, leading to increased food intake. This also increases dopamine levels, giving a pleasurable feeling when eating.
Jouw antwoord:
input text value
Vraag opnieuw antwoorden
Vraag:
How do stretch receptors in the stomach signal satiety?
Vul het antwoord in:
Controleer antwoordAntwoord:
Stretch receptors in the stomach signal satiety as the stomach expands during meals. The release of cholecystokinin (CCK) is triggered by fatty acids, peptides, and aromatic amino acids, which signals the brain to stop eating and activates digestion enzymes in the pancreas. This is a short-term regulation of satiety.
Jouw antwoord:
input text value
Vraag opnieuw antwoorden
Vraag:
What is the role of leptin in energy balance?
Vul het antwoord in:
Controleer antwoordAntwoord:
Leptin acts as a negative feedback signal between adipose tissue (fat) and the brain. When you eat more, fat levels increase, and leptin is released, telling the brain to stop eating and reducing food intake. This is a long-term regulation of energy balance.
Jouw antwoord:
input text value
Vraag opnieuw antwoorden
Vraag:
What happens when leptin levels are low?
Vul het antwoord in:
Controleer antwoordAntwoord:
Low leptin levels lead to decreased energy and metabolism, resulting in a feeling of weakness.
Jouw antwoord:
input text value
Vraag opnieuw antwoorden
Vraag:
What happens in leptin-deficient mice (Obob mouse)?
Vul het antwoord in:
Controleer antwoordAntwoord:
Leptin-deficient mice do not release leptin, leading to no reduction in food intake. This causes obesity in Obob mice.
Jouw antwoord:
input text value
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Test your knowledge on metabolism and energy balance with these practice questions. Each question is followed by a detailed answer to help you understand the concepts better.
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Gemaakt opBekijk alle 32 oefenvragen
-
What is the glucostatic theory?
The glucostatic theory proposes that the maintenance of glucose availability is crucial for life because glucose is the most important energy substrate for the brain. -
What is the lipostatic theory?
The lipostatic theory suggests that the amount of fat in the body is regulated to maintain energy stores. All the storage tissue in the body is fat. -
How does ghrelin regulate hunger?
Ghrelin is released when the stomach is empty and initiates a meal. As soon as the concentration of ghrelin goes down, you stop eating. This is a short-term regulation of hunger. -
How does melanin affect appetite?
Melanin blocks aMSH, a hormone that suppresses appetite. When melanin blocks aMSH, the MC4 receptor is left open, leading to increased food intake. This also increases dopamine levels, giving a pleasurable feeling when eating. -
How do stretch receptors in the stomach signal satiety?
Stretch receptors in the stomach signal satiety as the stomach expands during meals. The release of cholecystokinin (CCK) is triggered by fatty acids, peptides, and aromatic amino acids, which signals the brain to stop eating and activates digestion enzymes in the pancreas. This is a short-term regulation of satiety. -
What is the role of leptin in energy balance?
Leptin acts as a negative feedback signal between adipose tissue (fat) and the brain. When you eat more, fat levels increase, and leptin is released, telling the brain to stop eating and reducing food intake. This is a long-term regulation of energy balance. -
What happens when leptin levels are low?
Low leptin levels lead to decreased energy and metabolism, resulting in a feeling of weakness. -
What happens in leptin-deficient mice (Obob mouse)?
Leptin-deficient mice do not release leptin, leading to no reduction in food intake. This causes obesity in Obob mice. -
What happens in leptin receptor-deficient mice (Dbdb mouse)?
-
What happens when Db/db obese and diabetic mice are combined with lean wt mice?
-
What happens when Db/db obese and diabetic mice are combined with ob/ob obese mice?
-
What happens when ob/ob obese mice are combined with lean wt mice?
-
Where does leptin act in the brain?
-
How does leptin regulate appetite through NPY?
-
How does leptin regulate appetite through AgRP?
-
How does leptin activate POMC?
-
Do humans have a setpoint for weight?
-
What is hedonics in relation to eating?
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How does a-MSH regulate appetite?
-
What happens when there is dysfunction in a-MSH?
-
What stimulates the production of a-MSH?
-
What is MCH and its role in appetite regulation?
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How can MCH be targeted to prevent obesity?
-
What is energy balance?
-
What are the physiological responses to low energy expenditure?
-
How is body temperature regulated?
-
What are the types of thermoreceptors?
-
What happens when body temperature decreases?
-
Why do babies have more brown fat?
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What is the role of white fat in the body?
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How can muscles influence energy balance?
-
How does the body respond to increased body temperature?
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