local anesthetic functions by blocking A) the opening of potassium channels 8) t

Question

local anesthetic functions by blocking A) the opening of potassium channels 8) the opening of sodium channels O the closing of potassium D) the closing of sodium channels 0 A channels 3) The type A neurons A) are all myelinated 8) are the largest neurons in diameter O exhibit siltatory conduction. D) carry motor neurons. D All answers are correct 52) what would happen to a postsynaptic neuron that binds a neurotransmitter that closes potassium positively charged, and as they accumulate ion channels? A) An EPSP would result because potassium ions are B) inside the cell, the membrane moves closer to threshold An EPSP would result because the sodium/potassium pump would work to force potassium ons out of the cell, and sodium ions would be brought in as a result. O An IPSP would result because potassium ions are negatively charged, and as they accumulate inside the cell, the membrane becomes more hyperpolarized. There would be only on the opening and closing of sodium ion channels. D) no change in membrane potential because the membrane potential is dependent E There would be no change in membrane potential because there would be an increase in production of intracelular anions to compensate for the added potassium ions. 33) A neurotransmitter that allows sodium ions to leak into a postsynaptic neuron causes A) excitatory postsynaptic potentials B) inhibitory postsynaptic potentials. C) no changes in resting potential. D) an alteration of the membrane threshold. E damage to the myelin sheath. 34) The depolarizing phase of nerve impulse opens voltage gated calcium channels in the A) membrane of synaptic end bulbs. B) membrane of post-synaptic membranes. C) synaptic cleft D) All answers are correct

Explanation / Answer

Answer for the above questions

30) D, Closing the sodium channel

31) E, All are correct.

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