Your answer It decreases the HR it stimulates the parasympathetic nerves 1

Your answer it decreases the hr it stimulates the

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Your answer: It decreases the HR-it stimulates the parasympathetic nerves. 1 Atropine is an acetylcholine antagonist. Does atropine inhibit or enhance the effects of acetylcholine? Describe your results and how they correlate with how the drug works. How well did the results compare with your prediction? 2
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4/6/2020 PhysioEx Exercise 6 Activity 4 5/5 Your answer: Increases HR-stimulates and increases the frequency of SA-inhibits vagus nerve (or blocks parasympathetic nerves). Describe the benefits of administering digitalis. Your answer: Increases the force of contractions -decrease HR-increase stroke volume-Slows the sodium pump, which lets more Na+ accumulate heart muscle cells.-Less Na+ concentration gradient across the membrane-Na+/Ca+2 antiporters slow down so more Ca+2 remains inside the cardiac cells. 3 Distinguish between cholinergic and adrenergic chemical modifiers. Include examples of each in your discussion. Your answer: -ACh, cholinergic, decreases HR -Epinephrine & Norepinephrine, adrenegic, increases HR. 4
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  • Fall '13
  • Neurotransmitter, session ID

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