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Which of the following statements will apply to him? Insulin is a hormone that allows glucose to enter the cells and be used for energy. Patients with Fatal familial insomnia, an extremely rare and strictly hereditary disorder, also presents with hypermetabolism; however, this universally fatal disorder is exceedingly rare, with only a few known cases worldwide. The postabsorptive state, or the fasting state, occurs when the food has been digested, absorbed, and stored. If not, the excess glucose is stored as glycogen in the liver and muscle cells, or as fat in adipose tissue; excess dietary fat is also stored as triglycerides in adipose tissues. correct Depending on the amounts and types of nutrients ingested, the absorptive state can linger for up to 4 hours. Ketoacids are the liver’s main source of energy in the absorptive state. Terms The absorptive state of metabolism lasts for about four hours, during and after each meal. 1) Which is NOT characteristic of metabolism during the absorptive state? Metabolism. Falling glucose levels trigger the pancreas to release glucagon to turn off glycogen synthesis in the liver and stimulate its breakdown into glucose. The absorptive state, or the fed state, occurs after a meal when your body is digesting the food and absorbing the nutrients (anabolism exceeds catabolism). Starvation states happen very rarely in generally well-nourished individuals. The post-absorptive state refers to the time period six to twelve hours after a meal, when the body is neither in the post-prandial nor ... uals following an overnight fast [24]. 1986 Aug;35(8):709-17. Throughout this state, digested food is converted into sugar or glucose. b) conversion of glucose to glycogen in hepatocytes. During the absorptive state, our body digests foods and absorbs nutrients into the blood. a. increased plasma insulin concentration b. most tissues (except brain) use fatty acids as their energy source c. liver glycogen is converted to glucose d. The absorptive (well-fed) state is the 2- to 4-hour period after ingestion of a normal meal. Understand how nutrients are utilized during the absorptive state to provide energy, and how energy is provided when nutrients are not being absorbed. c) gluconeogenesis using amino acids. The absorptive state, or the fed state, occurs after a meal when your body is digesting the food and absorbing the nutrients (catabolism exceeds anabolism). Absorptive State Reactions. basal metabolism: [ mĕ-tab´o-lizm ] 1. biotransformation . Once these stores are depleted, proteins will be catabolized first from the organs with fast turnover, such as the intestinal lining. The glucose is released into the bloodstream to serve as a fuel source for cells throughout the body. Glucose levels in the blood begin to drop as it is absorbed and used by the cells. Metabolism varies, depending on age, gender, activity level, fuel consumption, and lean body mass. During any given day, your metabolism switches between absorptive and postabsorptive states. glycogen form that glucose assumes when it is stored, insulin: hormone secreted by the pancreas that stimulates the uptake of glucose into the cells, postabsorptive state: also called the fasting state; the metabolic state occurring after digestion when food is no longer the body’s source of energy and it must rely on stored glycogen, http://cnx.org/contents/14fb4ad7-39a1-4eee-ab6e-3ef2482e3e22@8.25, Describe what defines each of the three metabolic states, Describe the processes that occur during the absorptive state of metabolism, Describe the processes that occur during the postabsorptive state of metabolism, Explain how the body processes glucose when the body is starved of fuel. correct incorrect. During this state energy is stored in macromolecules and the metabolic reactions are primarily anabolic. The rest of the absorbed glucose is used to provide stores of energy for later use during the post-absorptive (fasting) state (see below). In the post-absorptive state glycogen and fat reserves are mobilized. Metabolic disorders have been associated with cognitive decline including decreased mental flexibility and memory deficits (Panza et al., 2010). Food you eat both to use immediately and, importantly, to store energy. Stimulates the uptake of glucose into body fat for storage use alternative fuels of carbohydrate,,... For proteins sent to the liver to be used by the peripheral tissues which is not of! Described previously ; however, the body state, the body states of the is... With stress meet the immediate energy needs of the following is not characteristic of metabolism 1. Be catabolized and used as a result, blood glucose concentration, the glucose that enters hepatocytes converted! 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