OBJECTIVE ASSESSMENT
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1. Which of the following lists correctly represents the four major categories of
neurotransmitters?
A. Amino acids, steroids, peptides, gases
B. Acetylcholine, amino acids, monoamines, unconventional neurotransmitters
C. Monoamines, electrolytes, peptides, lipids
D. Amino acids, hormones, ions, peptides
Correct Answer: B
2. Which neurotransmitter category includes GABA, glutamate, and glycine?
A. Monoamines
B. Neuropeptides
C. Amino acids
D. Acetylcholine
Correct Answer: C
3. What is the primary role of amino acid neurotransmitters in the CNS?
A. Long-term neuromodulation
B. Hormonal signaling
C. Fast-acting synaptic transmission
,D. Retrograde signaling
Correct Answer: C
4. Which amino acid neurotransmitter is the main inhibitory neurotransmitter in
the CNS?
A. Glutamate
B. Glycine
C. GABA
D. Aspartate
Correct Answer: C
5. Monoamine neurotransmitters are primarily derived from which type of
molecules?
A. Fatty acids
B. Carbohydrates
C. Aromatic amino acids
D. Nucleotides
Correct Answer: C
6. Which neurotransmitter is classified as an indolamine?
A. Dopamine
B. Histamine
C. Serotonin (5-HT)
D. Norepinephrine
Correct Answer: C
7. Dysregulation of monoamines is most commonly associated with which
conditions?
A. Stroke and epilepsy
,B. Depression, schizophrenia, and anxiety
C. Alzheimer’s disease only
D. Peripheral neuropathy
Correct Answer: B
8. Which statement best describes acetylcholine (ACh)?
A. It is an amino acid neurotransmitter
B. It is a monoamine
C. It forms its own neurotransmitter category
D. It is an unconventional neurotransmitter
Correct Answer: C
9. Loss of acetylcholine-producing neurons is most closely associated with which
disease?
A. Parkinson’s disease
B. Alzheimer’s disease
C. Schizophrenia
D. Bipolar disorder
Correct Answer: B
10. Which neurotransmitter is gaseous and diffuses freely across cell
membranes?
A. Dopamine
B. Nitric oxide
C. Glutamate
D. Serotonin
Correct Answer: B
, 11. Which feature distinguishes unconventional neurotransmitters such as nitric
oxide?
A. Stored in vesicles
B. Act only on ion channels
C. Produced on demand and not stored
D. Act only in the peripheral nervous system
Correct Answer: C
12. Dopamine is primarily produced in which brain regions?
A. Raphe nuclei
B. Locus ceruleus
C. Substantia nigra and ventral tegmental area
D. Basal nucleus of Meynert
Correct Answer: C
13. A decrease in dopamine is most strongly associated with which disorder?
A. Schizophrenia
B. Parkinson’s disease
C. Bipolar disorder
D. Anxiety disorders
Correct Answer: B
14. Serotonin-producing neurons are primarily located in which structure?
A. Hypothalamus
B. Basal ganglia
C. Raphe nuclei
D. Thalamus
Correct Answer: C