PDA exam 1 quiz questions With Complete

Which current flow listed below causes depolarization of the neuronal cell membrane? sodium efflux chloride influx potassium efflux sodium influx Correct Answers Correct answer sodium influx An EPSP ____________ the likelihood of an action potential occurring. has no effect on has an unknown effect on decreases increases Correct Answers increases A voltage-gated ion channel is opened in response to a change in the membrane potential. phosphorylation. ligand binding. All of the above Correct Answers a change in the membrane potential. Which ion movement listed below causes hyperpolarization of the neuronal cell membrane? chloride influx or potassium efflux chloride efflux or potassium influx chloride influx only potassium efflux only Correct Answers chloride influx or potassium efflux An IPSP ___________ the likelihood of an action potential occurring. has an unknown effect on increases has no effect on decreases Correct Answers decreases Compared to a weak depolarizing stimulus, a strong depolarizing stimulus produces a wider action potential. produces a higher action potential frequency. produces a larger action potential. produces a longer absolute refractory period. Correct Answers produces a higher action potential frequency. The transmission of information within a neuron occurs by what kind of mechanism? synaptic chemical WiFi electrical Correct Answers electrical When a neuron is hyperpolarized, its membrane potential is equal to the resting membrane potential. less negative than the resting membrane potential. more negative than the resting membrane potential. more positive than the resting membrane potential. Correct Answers more negative than the resting membrane potential. The transmission of information between neurons occurs by what kind of mechanism? electrical ham radio chemical Wi/Fi Correct Answers chemical The resting membrane potential is established by: