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Title: PhysioEx 9.0 Exercise 3 Activity 4 Post by: dkpierce on Jun 19, 2012 I NEED HELP PLEASE I CANT FIND THE ANSWERS TO THESE LAST 3 QUESTIONS!!
If depolarizing membrane potentials open voltage-gated sodium channels, what closes them? Why must a sushi chef go through years of training to prepare puffer fish for human consumption? For action potential generation and propagation, are there any other cation channels that could substitute for the voltage-gated sodium channels if the sodium channels were blocked? Title: Re: PhysioEx 9.0 Exercise 3 Activity 4 Post by: duddy on Jun 20, 2012 Why must a sushi chef go through years of training to prepare puffer fish for human consumption? Careful preparation of the pufferfish requires removal of the toxic portions that contain tetrodotoxin. The poison is most concentrated in the liver, ovaries and skin of the fish. For action potential generation and propagation, are there any other cation channels that could substitute for the voltage-gated sodium channels if the sodium channels were blocked Calcium channels could possibly substitute for sodium channels to provide an influx of cation. |