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Drug Receptor/Effect

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.

Target Organ
Drug receptor
Agonist effect
Antagonist effect
Heart rate (sympathetic)   Beta-1 & Beta-2   Increase   Decrease  
Heart rate (cholinergic)   Cholinergic   Decrease   Increase  
Heart (contractibility)   Beta-1 and Beta-2   Increase   Decreaese  
Blood vessels (Arterial-alpha)   Alpha-1   Vasoconstriction   ------  
Blood vessels (Arterial -beta)   Beta-2   Vasodilation   ------  
Lungs (bronchioles-sympathetic)   Beta-2   Bronchodilation   Bronchoconstriction  
Lungs (bronchioles-cholinergic)   Cholinergic   Bronchoconstriction   Bronchodilation  
Lungs (Airway secretions)   Cholinergic   Increase   Decrease  
Eye (Pupils-sympathetic)   Alpha-1   Mydriasis   Miosis  
Eye (Pupils-cholinergic)   Cholinergic   Miosis   Mydriasis  
Lens of Eye (Accommodation)   Cholinergic   ------   Decrease (blurred vision)  
Eye (Lacrimation)   Cholinergic   ------   Decrease (dry eyes)  
Mouth (Salivation)   Cholinergic   ------   Decrease (dry mouth)  
Stomach (Acid secretion)   Cholinergic   Increase   Decrease  
GI Tract (Motility)   Cholinergic   Increase   Decrease  
Bladder Wall (Detrusor Muscle)   Cholinergic   Contraction (enhance urination)   Relaxation (inhibit urination)  
Bladder Sphincter (Sympathetic)   Alpha-1   Constriction (inhibit urination)   Relaxation (enhance urination)  
Bladder Sphincter (Cholinergic)   Cholinergic   Relaxation (enhance urination)   Contraction (inhibit urination)  
Uterus (labor contractions)   Beta-2   Decrease (Inhibit labor)   ------  
Skin (Sweat)   Cholinergic   Increase   Decrease  


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Created by: tlaugherty