Biology 1104 Chemical Synapses case study

Biology 1104 Chemical Synapses case study - -In order for...

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Lecture 18 Case Study 4: Bad Fish - Why would Dr. Westwood experience numbness? o Blockage of the flow of Na+ ions in the CNS and PNS. - Why would Dr. Westwood experience paralysis? o The brain cannot communicate to the muscles to react. - CQ1: What is the function of the action potential in neurons? o 1. It is the signal of the neuron that is propagated along the length of an axon. o 2. It is what helps voltage-gated Na+ and K+ channels to work properly o 3. It keeps the resting membrane potential at -60to-70 mV. - Fugu (pufferfish) requires a license to prepare. If you are poisoned the survival rate is 50- 60%. A ventilator is necessary to sustain life while the poisoning wears off.
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Unformatted text preview: -In order for it to wear off, it has to stop blocking the Na+ channels. -Bacteria make the toxin in pufferfish and live inside the pufferfish. This is a mutualistic relationship. -Pufferfish have multiple adaptations to avoid being caught, including puffing up. -Presumably you have to ingest it in order to get the effects. -TTX is located in the liver, gonads, and skin of the pufferfish.-CQ3: Which of the following explanations for how homobatrachotoxin works is most consistent with the data you’ve been provided with for how homobatrachotoxin works?...
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This note was uploaded on 01/19/2012 for the course BIOL 1104 taught by Professor Stanger-hall during the Spring '08 term at UGA.

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