RT Book, Section A1 Panus, Peter C. A1 Jobst, Erin E. A1 Masters, Susan B. A1 Katzung, Bertram A1 Tinsley, Suzanne L. A1 Trevor, Anthony J. SR Print(0) ID 6090666 T1 Chapter 6. Sympathomimetics and Sympatholytics T2 Pharmacology for the Physical Therapist YR 2009 FD 2009 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-146043-9 LK accessphysiotherapy.mhmedical.com/content.aspx?aid=6090666 RD 2024/04/23 AB Receptors of the sympathetic system may be divided into alpha (α), beta (β), and dopamine (D) receptors. Drugs that bind to these receptors and modulate or mimic the function of the sympathetic nervous system may be divided into those which augment the system (sympathomimetics) and those which antagonize the system (sympatholytics). The sympathomimetics constitute a very important group of agonists used for cardiovascular, respiratory, and other conditions. They are readily divided into subgroups on the basis of their spectrum of affinity for α, β, or D receptors. Alternatively, sympathomimetics may be divided into subgroups based on whether their mode of action is direct or indirect. Sympatholytics are an important group of antagonists used in cardiovascular and other conditions. These drugs are divided into primary subgroups on the basis of their receptor (α and β) selectivity.