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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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Laci1169 Laci1169
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10 years ago
Activity 2: Examining the Effect of Vagus Nerve  Stimulation
   1. Explain the effect that extreme vagus nerve stimulation had on the heart
   2. Explain two ways the heart can overcome excessive vegal stimulation.
   3. Describe how the sympathetic and parasympathetic nervous system work together to regulate heart rate
   4. What do you think would happen to the heart rate if the vagus nerve was cut?
Activity 3:Examining the effect of Temperature on the Heart Rate
   1.Explain the effect that decreasing the temperature had on the frog heart. How do you think the human heart would respond? How well did the results compare with your predictions?
   2. Describe why Ringer's solution is required to maintain heart contractions
   3. Explain the effect that increasing the temperature had on the frog heart. How do you think the human heart would respond?
Activity 4: Examining the effects of Chemical Modifiers on Heart Rate
   1.Describe the effect that pilocarpine had on the heart and why is had this effect
   2. Atropine is an acetylcholine antagonist. Does atropine inhibit or enhance the effects of acetylcholine? How do they correlate with how the drug works.
   3.Describe the benefits of administering digitalis
   4. Distinguish between cholinergic and adrenergic chemical modifiers, include examples
Activity 5:Examining the Effects of various ions on Heart Rate
   1. Describe the effects that increasing calcium ions had on the heart.
   2. Describe the effect of increasing the potassium ions initially had on the heart. Relate this to the resting membrane potiential of the cardiac muscle cell
   3.Describe how calcium channel blockers are used to treat patients and why[/color]
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10 years ago
1) You'll need to show you've attempted the work
2) Two questions - maximum - per thread
3) Have you tried using the search function (i.e. https://biology-forums.com/index.php?topic=8202.0)
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