Beta-blockers are used to treat cardiovascular disorders because they areantagonists at beta-adrenergic receptors. Within the cell this activity will be seen as?OA) Increased signaling via the G₁ proteinB) Increased protein kinase A activityDecreased phospholipase C activityD) Decreased cAMP levelsE) Increased inositol 1,4,5-trisphosphate levels

Beta blockers are used as medications that reduce blood pressure. These compounds can prevent…

Answered: Beta-blockers are used to treat…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 18RE

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1)The concept of saturation is defined as? a) The ability of a receptor to bind only one type or a limited number of structurally related types of chemical messengers. b) The degree to which receptors are occupied by messengers. c) A decrease in the total number of target-cell receptors for a given messenger d) The increased responsiveness of a target cell to a given messenger 2. Phosphodiesterase activity produces one of the following actions a) Breakdown cAMP b) Increases cAMP c) Increases PKC activity d) Increases cytosolic IP3 levels 3. Phospholipase C leads to one of the following? a) Increase in cAMP b) Breakdown of cAMP c) Increase in cytosolic levels of IP3 and DAG d) A decrease in cytosolic Ca++ concentration
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