Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 22, Problem 21RQ
Summary Introduction
To determine: The reason that some researchers concluded that the ratio of insulin and glucagon tells whether the glucose is stored in the body or removed from storage.
Introduction: The endocrine system has the primary responsibility for metabolic regulation in the body.
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Chapter 22 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 22.1 - Explain the roles of the satiety and feeding...Ch. 22.1 - Name the four layers of the GI tract wall,...Ch. 22.2 - Prob. 3CCCh. 22.2 - Prob. 4CCCh. 22.2 - Prob. 5CCCh. 22.2 - Prob. 6CCCh. 22.4 - Prob. 7CCCh. 22.4 - Prob. 8CCCh. 22.4 - Use your understanding of digestive physiology to...Ch. 22.5 - Prob. 10CC
Ch. 22.5 - Prob. 11CCCh. 22.5 - Prob. 12CCCh. 22.6 - What are the primary target tissues for insulin?Ch. 22.6 - Why are glucose metabolism and glucose transport...Ch. 22.6 - What is the advantage to the body of inhibiting...Ch. 22.6 - Prob. 16CCCh. 22.6 - Prob. 17CCCh. 22.6 - Prob. 18CCCh. 22.6 - Prob. 19CCCh. 22.6 - Prob. 20CCCh. 22.7 - Prob. 21CCCh. 22.7 - Prob. 22CCCh. 22.7 - Prob. 23CCCh. 22.7 - Prob. 24CCCh. 22 - Define metabolic, anabolic, and catabolic...Ch. 22 - Prob. 2RQCh. 22 - Prob. 3RQCh. 22 - Prob. 4RQCh. 22 - Define basal metabolic rate (BMR). Under what...Ch. 22 - Prob. 6RQCh. 22 - Prob. 7RQCh. 22 - What is a nutrient pool? What are the three...Ch. 22 - Prob. 9RQCh. 22 - Prob. 10RQCh. 22 - Prob. 11RQCh. 22 - Name the two hormones that regulate glucose...Ch. 22 - Which noncarbohydrate molecules can be made into...Ch. 22 - Under what circumstances are ketone bodies formed?...Ch. 22 - Name two stimuli that increase insulin secretion,...Ch. 22 - Prob. 16RQCh. 22 - What factors release glucagon? What organ is the...Ch. 22 - Prob. 18RQCh. 22 - Prob. 19RQCh. 22 - Prob. 20RQCh. 22 - Prob. 21RQCh. 22 - Prob. 22RQCh. 22 - Prob. 23RQCh. 22 - Prob. 24RQCh. 22 - Explain the current theory of the control of food...Ch. 22 - Prob. 26RQCh. 22 - Scott is a bodybuilder who consumes large amounts...Ch. 22 - Prob. 28RQCh. 22 - Prob. 29RQCh. 22 - One of the debates in fluid therapy for diabetic...Ch. 22 - Prob. 31RQCh. 22 - Prob. 32RQ
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- A woman affected by type I (insulin-dependent) diabetes miscalculates and injects herself with too much insulin. She soon begins to feel confused and sluggish. She calls for medical assistance and injects herself with the glucagon her doctor prescribed for such an emergency. When an ambulance arrives, she is given dextrose ( a sugar) intravenously. How did the excess insulin cause her symptoms. How did the glucagon injection and the intravenous sugar help reverse them?arrow_forward"We would have no idea today of the importance of insulin as a regulatory hormone if its absence were not associated with the human disease diabetes. It is the dramatic consequences of its absence that focused early efforts on the identification of insulin and the study of its normal role in physiology."arrow_forwardBlood levels of the readily available fuel, glucose, are tightly regulated by two chemical messengers. One of these, called insulin, decreases blood glucose. The other chemical messenger, called glucagon, increases blood glucose. Both chemical messengers are present at varying levels in the blood at all times. From the choices below, select all of the events that you think will happen in response to a decrease in blood glucose. Select all that apply. > View Available Hint(s) V Insulin levels increase O Insulin levels decrease OGlucagon levels increase V Glucagon levels decrease O Blood glucose levels begin to increase O Blood glucose levels continue to decrease O Blood glucose levels remain unchangedarrow_forward
- Several hormones may activate the same G protein. Therefore, different hormones may have the same or a similar effect. For example, glycogen degradation is initiated by both epinephrine and glucagon. Why is overlap of function an advantage?arrow_forwardA certain type of tumor results in the overproduction of glucagon. Researchers claim that treatment with insulin can counteract the effects of the excess glucagon . Provide reasoning to justify the researchers' claim.arrow_forwardBased on your understanding of the binding of insulin, select all of the following events that you would expect to occur in muscle cells due to insulin binding to receptors.Group of answer choices a. Glycogen synthesis is activated b. PFK is stabilized in the R-state and glycolysis is activated c. GLUT4 (transporters) are increased in concentration at the plasma membrane d. Fructose 2,6-bisphosphate increased levels aid in stabilization of the T-state fructose 1,6-bisphosphatase e. Gluconeogenesis is activated in response to elevated fructose 2,6-bisphosphate levels f. Phosphorylation cascades allow for covalent modifications that would aid in the breakdown of glycogen to allow for increased levels of glucose 6-phosphate in the cell g. Hexokinase is inhibited so glucose will not be brought into the cell in high amounts h. Glycogen breakdown pathway is inactivatedarrow_forward
- In order to help Mike understand, explain how the rate of insulin release differs after consumption of simple andcomplex carbohydrates. You may choose to answer with words or a labeled diagram Now use your table to explain to Mike why elevated insulin levels are associated with heart disease.arrow_forwardAdipose tissue is not merely a repository for excess fat, but it is also an endocrine organ.Discuss the roles played by the hormones released by adipose tissue. Why are these functions importantin energy metabolism?arrow_forwardWhat is the ligand(signaling molecule) in a(an) insulin signaling pathway and what causes this ligand to be sent out?arrow_forward
- Chronic stress or GC exposure can cause insulin resistance. The influence of GC on insulin is complex, but leads to hyperinsulinemia (high circulating insulin levels) and insulin resistance. Insulin resistance is typically caused by a decreased number of insulin receptors on the cell surface. Speculate on a mechanism resulting in a decreased number of insulin receptors.arrow_forwardCompare and contrast INSULIN and GLUCAGON using a Venn diagram.arrow_forwardExplain the functions of insulin. Why do you think a hormone such asinsulin is required to carry out these functions?arrow_forward
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