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jandaman jandaman
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Posts: 4
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12 years ago
I am having trouble in my Anatomy and phisiology class, and I was wondering if i could find the answers to review sheet 3 for physio ex 8.0.
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wrote...
12 years ago
are you looking for the lab answers?
jandaman Author
wrote...
12 years ago
there is a review sheet at the end of exercise 3 physioex 8.0. here are the questions i need help with.
3. Why don’t the terms depolarization and action potential mean the same thing?  _____________________________ ______

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

4.  What is the difference between membrane irritability and membrane conductivity?_____________________________ ___

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________


 
Eliciting a Nerve Impulse

5.  Why does the nerve action potential increase slightly when you add 1.0 V to the threshold voltage and stimulate the nerve?

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

6.  If you were to spend a lot of time studying nerve physiology in the laboratory, what type of stimulus would you use and why?
_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

7.  Why does the addition of sodium chloride elicit an action potential?_____________________________ _______________

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

Inhibiting a Nerve Impulse

8.  What was the effect of ether on eliciting an action potential?_____________________________ _____________________

_____________________________ _____________________________ _____________________________ ______________

9.  Does the addition of ether to the nerve cause any permanent alteration in neural response?___________________________

_____________________________ _____________________________ _____________________________ ______________

10. What was the effect or curare on eliciting an action potential?_____________________________ ____________________

_____________________________ _____________________________ _____________________________ ______________

11. Explain the reason for your answer in question 10 above._______________________ _____________________________

_____________________________ _____________________________ _____________________________ ______________

12. What was the effect of lidocaine on eliciting an action potential?_____________________________ _________________

_____________________________ _____________________________ _____________________________ ______________

 
Nerve Conduction Velocity

13.  What is the relationship between size and of the nerve and conduction velocity?_____________________________ _____

_____________________________ _____________________________ _____________________________ _______________

_____________________________ _____________________________ _____________________________ _______________

14. Keeping your answer to question 13 in mind, how might you draw an analogy between the nerves in the human body and electrical wires?
_____________________________ _____________________________ _____________________________ _______________

_____________________________ _____________________________ _____________________________ _______________

15. Hypothesize  what type of animals would have the fastest conduction velocities. _____________________________ _____

_____________________________ _____________________________ _____________________________ _______________

16. How does myelination affect nerve conduction velocity? Explain. _____________________________ ________________

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

17. If any of the nerves used were reversed in their placement on the stimulating and recording electrodes, would any differences be seen in conduction velocities?  Explain.

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

_____________________________ _____________________________ _____________________________ ______________

 
wrote...
12 years ago
oh, I only have the lab answers. Let me know if you need them.
jandaman Author
wrote...
12 years ago
yes please.. i imagine they could help me solve the questions
wrote...
Staff Member
12 years ago
@jandaman, one question per topic.
- Master of Science in Biology
- Bachelor of Science
jandaman Author
wrote...
12 years ago
Sorry about that. It is my first time on the site. Can I post each question seperately on here?
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