1. Heparin exertsitstherapeutic action by what?: Answer Upregulating the activity of oneof the body's natural anticoagulant molecules, antithrombin III 2. What physiologic action happens when the offending drug is administeredduring an anaphylactic reaction: Answer mast cells liberate large doses of histamine 3. What is the effect of cardiac glycosides: Answer digitalis glycosides have a negativechronotropic effect on the cardiac muscle cells 4. What is the mechanism of action of cardiac glycosides: Answer increase the force ofcardiac contraction 5. What is an anti-hypertensive agent which competes with epinephrine foravailable betareceptor sites: Answer atenolol (Ternormin) 6. What is the mechanism of action of group IV anti-dysrhythmia drugs: Answer depressing phases 4 depolarization and lengthening phases 1 and 2 repolarization 7. What type of action does nitrates have on the body?: Answer REDUCTION in systemic venous tone 8. What isthe recommended level of low-density lipoprotein cholesterol (LDL)for patients