Psychology 224 exam 2022

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NAME: Psychology 224 FINAL EXAM: 100 multiple choice questions worth 1 point each. There are 5 EXTRA CREDIT questions worth 2 points each. Good luck and have a great winter break! Questions 1-65 r... efer to material previously covered on exams 1-4. 1) What part of the neuron releases neurotransmitter? a) terminal button b) myelin c) dendrites d) soma e) B & D 2) What do Nodes of Ranvier lack? a) axon b) ion channels c) action potential d) saltatory conduction e) myelin 3) Drug ‘X’ serves as a precursor to a neurotransmitter in the CNS. Drug ‘X’ is a(n) __________? a) antagonist b) agonist c) synthetic neurotransmitter d) drug vesicle e) all of the Above 4) The influx of which ion(s) leads to hyperpolarization? a) chloride b) sodium c) calcium d) oxygen e) none of the above 5) The influx of which ion(s) leads to depolarization? a) chloride b) sodium c) calcium d) B & C e) none of the above 6) What is it called when the stimulation of an axon makes the membrane potential more negative? a) resting membrane potential b) reversal potential c) all-or-none law d) hyperpolarization e) depolarization 7) What is it called when the stimulation of an axon makes the membrane potential more positive? a) resting membrane potential b) reversal potential c) all-or-none law d) hyperpolarization e) depolarization 8) What is NOT true of an action potential? a) obeys the all-or-none law b) it is triggered at the axon hillock c) it degrades with time d) it depends on neural integration e) it is generated if the threshold of excitation is reached 9) What term is used to indicate that something is located away from the midline (center of the face)? a) medial b) dorsal c) lateral d) ventral e) rostral 10) What is true of postsynaptic potentials (PSPs)? a) Their size is directly proportional to the amount of neurotransmitter released. b) They will degrade with time. c) They are always determined by the neurotransmitter type. d) A & B e) all of the above 11) Known as the ‘little brain’ this region is responsible for motor coordination. a) medulla oblongata b) hippocampus c) cerebellum d) pons e) tectum 12) What is the difference between competitive and non-competitive binding? a) Competitive permits sodium and calcium to enter the cell and non-competitive permits chloride to enter the cell. b) Competitive involves facilitating the opening of the ion channel and non-competitive inhibits channel opening. c) Competitive involves binding to the neurotransmitter-binding site while noncompetitive binds elsewhere on the receptor. d) al [Show More]

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