BIOL 2114L Lecture 6: Examining the Effect of Chemical Modifiers on Heart Rate BIOL 2114 Lab - PhysioEx Exercise 6 Activity 4
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Activity 4: examining the e ects of chemical modi ers on heart rate. The parasympathetic nervous system releases __________ to a ect heart rate. A cholinergic drug that worked the same as acetylcholine would. You correctly answered: be an agonist and decrease heart rate. You correctly answered: increasing the rate of depolarization and increasing the frequency of action potentials. Predict question 1: pilocarpine is a cholinergic drug, an acetylcholine agonist. Predict the e ect that pilocarpine will have on heart rate. Predict question 2: atropine is another cholinergic drug, an acetylcholine antagonist. Predict the e ect that atropine will have on heart rate. Your answer: atropine will have no e ect on heart rate. Which of the following is true of epinephrine? https://media. pearsoncmg. com/bc/bc_0media_ap/physioex/10/ex6/act4/ You correctly answered: it increases the heart rate and mimics the sympathetic nervous system. The nal chemical modi er we will look at is digitalis (also known as digoxin and digitoxin and derived from the foxglove plant).
