In an episode of the Hallmark Movie and Mystery- Emma Fielding Mysteries, a prominent anthropologist is poisoned using batrachotoxin from a poison-dart frog. This toxin causes voltage-gated sodium channels to open at a more negative membrane potential and also prevents their inactivation. An amount equivalent to a grain of salt will have nasty effects on your motor neurons. 11. Opening these channels at a more negative membrane potential will cause the motor neuron to be which of the following? Choose all that apply. (1 point) – Overexcitable – normally excitable – underexcitable
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Preventing the inactivation of the voltage-gated sodium channels would prevent which stage(s) of the action potential from occurring? Choose all that apply.points) – Depolarization – repolarization – hyperpolarization Based on your knowledge of muscle function from the previous chapter, if the motor neuron affected by this poison sent signals to the skeletal muscle of the diaphragm (that controls breathing) and the cardiac muscle of the heart (that pumps blood): 13. Would the muscle be able to contract- yes or no? Type answer as 1 of the 2 choices using lowercase letters. (1 point) 14. Would the muscle be able to relax-yes or no? Type answer as 1 of the 2 choices using lowercase letters. ( 1 point) Anthropologist Essay Paper