Essay
Draw graphs showing the effect on action potentials in a cell following effective doses of each of the listed neurotoxins.Assume that the cell is normally brought to threshold by an electrical stimulus applied to it, so that any abnormality is due to the toxin.Precise values for voltage and duration are not important, just a general trend in how the action potential may be different from normal.
1.puffer fish poison (blocks voltage-gated sodium channel activation)
2.tetraethylammonium (blocks voltage-gated potassium channels)
3.ouabain (blocks sodium-potassium pumps)
4.sea anemone toxin (blocks voltage-gated sodium channel inactivation)
Correct Answer:

Verified
1.no action potential; membrane potentia...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q78: Your study partner in your physiology class
Q79: The sodium-potassium exchange pump<br>A) must re-establish ion
Q80: Explain the differences in axon regeneration in
Q81: The all-or-none principle states that<br>A) all stimuli
Q82: "A refractory period occurs following all types
Q84: Interneurons are found<br>A) only in the brain.<br>B)
Q85: Conduction occurs along an axon because<br>A) outflow
Q86: All of the following must occur before
Q87: Explain the roles that the AMPA and
Q88: Learning and memory are thought to be