Principles of Anatomy and Physiology
14th Edition
ISBN: 9781118345009
Author: Gerard J. Tortora
Publisher: WILEY
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Textbook Question
Chapter 25, Problem 24CP
Why is ketogenesis more significant during fasting or starvation than during normal absorptive and postabsorptive states?
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The body doesn’t have a reserve of proteins or amino acids for energy production. Which class of protein may be used initially during fasting to maintain glucose and energy levels? What is the difference between a glucogenic and ketogenic amino acid and why are both important during fasting?
What metabolic and hormonal changes account for decreased gluconeogenesis during the first several weeks of starvation in humans?
How do the liver and adipose tissue metabolize glucose during the absorptive state?
Chapter 25 Solutions
Principles of Anatomy and Physiology
Ch. 25 - l. What is metabolism? Distinguish between...Ch. 25 - How does ATP link anabolism and catabolism?Ch. 25 - How is a hydride ion different from a hydrogen...Ch. 25 - 4. What are three ways that ATP can be generated?
Ch. 25 - How does glucose move into or out of body cells?Ch. 25 - Prob. 6CPCh. 25 - Prob. 7CPCh. 25 - Outline the principal events and outcomes of the...Ch. 25 - Prob. 9CPCh. 25 - Prob. 10CP
Ch. 25 - Prob. 11CPCh. 25 - Prob. 12CPCh. 25 - Prob. 13CPCh. 25 - Which lipoprotein particles contain "good" and...Ch. 25 - Prob. 15CPCh. 25 - Prob. 16CPCh. 25 - Prob. 17CPCh. 25 - Prob. 18CPCh. 25 - Prob. 19CPCh. 25 - Prob. 20CPCh. 25 - Prob. 21CPCh. 25 - Prob. 22CPCh. 25 - 23. What are the roles of insulin, glucagon,...Ch. 25 - Why is ketogenesis more significant during fasting...Ch. 25 - 25. Define a kilocalorie (kcal). How is the unit...Ch. 25 - Prob. 26CPCh. 25 - Prob. 27CPCh. 25 - Prob. 28CPCh. 25 - Prob. 29CPCh. 25 - 31. What is a nutrient?
Ch. 25 - Briefly describe the USDA's My Plate and give...Ch. 25 - What is a mineral? Briefly describe the functions...Ch. 25 - Prob. 33CPCh. 25 - Prob. 34CP
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- Is ketogenesis anabolic or catabolic? Thus, what initiates the ketogenesis in our body?arrow_forwardThe following is a typical underlying factor in obesity-induced inflammation a) Increased secretion of the adipokine adiponectin b) Higher lipolysis rate in hypertrophied adipocytes c) Increased insulin sensitivity in adipose tissue d) Conversion of pro-inflammatory M1 macrophages to anti-inflammatory M2 macrophagesarrow_forwardThere is some evidence that high protein diets naturally suppress appetite. How might that effect weight loss?arrow_forward
- Pepsin and pancreatic digestive enzymes are regulated by: Allosteric regulation Zymogen activation Covalent modification Competitive inhibitionarrow_forwardIn an Absorptive (fed) state Which predominates? Anabolic or catabolic processes? Which ones specifically (ex: glycolysis, glycogenesis, etc)?arrow_forwardDuring the absorptive state, assuming a balanced diet without need for gluconeogenesis, give examples of how the body will use the absorbed carbohydrates, absorbed lipids and absorbed amino acids.arrow_forward
- How does ghrelin, CCK and peptide YY function in appetite regulation? What is the function of leptin? What is the function of insulin? Briefly explain how obesity contributed to shortened life span.arrow_forwardHow does ketogenic diet affect the human physiological processes, particularly in the regulation of lipids?arrow_forwardWhich organs play a role in the absorptive state and what are the metobolic reactions?arrow_forward
- Which are the major fates of glucose during the absorptive phase?arrow_forwardWhat stimulates net glucose uptake by the liver during the absorptive state but gluconeogenesis and glucose release during the postabsorptive state?arrow_forwardWhat is the importance of vitamin C for carnitine and fat metabolism? explain in detailarrow_forward
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