Cholinergic antagonists can be useful in the treatment of the following conditions EXCEPT:
A) motion sickness.
B) irritable bowel syndrome.
C) overactive urinary bladder.
D) tachycardia.
E) Parkinson disease.
Certain beta blockers such as pindolol (Visken) and acebutolol (Sectral) are valuable because they block the effects of excessive endogenous catecholamines while producing a normal background level of sympathetic stimulation to the heart. These beta blockers are said to have:
A) nonselective sympatholytic activity.
B) intrinsic sympatholytic activity.
C) intrinsic sympathomimetic activity.
D) extrinsic sympatholytic activity.
E) selective sympatholytic activity.
Nonselective beta blockers may produce bronchoconstriction in patients with asthma and similar respiratory disorders because nonselective beta blockers:
A) stimulate beta-1 receptors on the lungs.
B) block beta-1 receptors on the lungs.
C) stimulate beta-2 receptors on the lungs.
D) block beta-2 receptors on the lungs.
E) stimulate alpha-1 receptors on the lungs.