<prompt> Which of the following can be blocked by atropine, a muscarinic receptor blocker?Increased blood pressure caused by nicotineIncreased skeletal muscle strength caused by neostigmine, an acetycholine esterase inhibitorBradycardia caused by infusion of acetylcholineAll of these  <response>: Atropine is a muscarinic antagonist. Muscarinic antagonists competitively inhibit the effect of acetylcholine at muscarinic receptors. Bradycardia caused by infusion of acetylcholine- can be blocked by atropine 