MSN 671 Final Exam
What is classic neurotransmission? - answer Communication between neurons
involving action potentials, calcium influx, vesicle fusion, neurotransmitter release, and
receptor binding.
What triggers vesicle fusion in neurotransmission? - answerCalcium influx through
voltage-gated calcium channels.
How is the signal terminated in neurotransmission? - answerBy reuptake transporters,
enzymatic degradation, and diffusion.
What is the function of ligand-gated ion channels? - answerThey open when a
neurotransmitter binds.
What is the role of voltage-sensitive ion channels? - answerThey open due to
membrane depolarization.
What is the function of sodium-charged ion channels? - answerThey allow sodium
influx, leading to depolarization.
What neurotransmitter is associated with focus and energy? - answerNorepinephrine.
What role does acetylcholine play in the body? - answerIt is involved in memory, muscle
contraction, and the peripheral nervous system.
What is melatonin's role in the body? - answerIt regulates circadian rhythms and sleep-
wake cycles.
What is the effect of low serotonin levels? - answerIt is associated with depression and
impulsivity.
What causes tardive dyskinesia? - answerLong-term D2 receptor blockade in the
nigrostriatal pathway.
What is galactorrhea? - answerBreast discharge caused by elevated prolactin levels
due to dopamine blockade.
What monitoring is required for patients on second-generation antipsychotics? -
answerBlood pressure, weight/BMI, waist circumference, fasted glucose/HbA1C, and
lipid panel.
What is classic neurotransmission? - answer Communication between neurons
involving action potentials, calcium influx, vesicle fusion, neurotransmitter release, and
receptor binding.
What triggers vesicle fusion in neurotransmission? - answerCalcium influx through
voltage-gated calcium channels.
How is the signal terminated in neurotransmission? - answerBy reuptake transporters,
enzymatic degradation, and diffusion.
What is the function of ligand-gated ion channels? - answerThey open when a
neurotransmitter binds.
What is the role of voltage-sensitive ion channels? - answerThey open due to
membrane depolarization.
What is the function of sodium-charged ion channels? - answerThey allow sodium
influx, leading to depolarization.
What neurotransmitter is associated with focus and energy? - answerNorepinephrine.
What role does acetylcholine play in the body? - answerIt is involved in memory, muscle
contraction, and the peripheral nervous system.
What is melatonin's role in the body? - answerIt regulates circadian rhythms and sleep-
wake cycles.
What is the effect of low serotonin levels? - answerIt is associated with depression and
impulsivity.
What causes tardive dyskinesia? - answerLong-term D2 receptor blockade in the
nigrostriatal pathway.
What is galactorrhea? - answerBreast discharge caused by elevated prolactin levels
due to dopamine blockade.
What monitoring is required for patients on second-generation antipsychotics? -
answerBlood pressure, weight/BMI, waist circumference, fasted glucose/HbA1C, and
lipid panel.
