Central Nervous System Quizzes: Test Your Knowledge

Question 1

In the central nervous system, which neurotransmitter acts as the primary inhibitory neurotransmitter?

Accepted Answer

GABA

Answer

Dopamine

Answer

Serotonin

Answer

Glutamate

Question 2

The blood-brain barrier is a protective mechanism primarily designed to:

Accepted Answer

Protect the brain from potentially harmful substances

Answer

Allow for rapid entry of nutrients into the brain

Answer

Facilitate waste removal from the brain

Answer

Regulate blood flow to the brain

Question 3

Which of the following is not categorized as an anxiolytic?

Accepted Answer

Tricyclic antidepressants

Answer

Benzodiazepines

Answer

Buspirone

Answer

Selective serotonin reuptake inhibitors

Question 4

The primary mechanism of action for tricyclic antidepressants is to:

Accepted Answer

Increase serotonin and norepinephrine levels

Answer

Block GABA reuptake

Answer

Antagonize dopamine receptors

Answer

Activate opioid receptors

Question 5

A common side effect associated with antipsychotics is:

Accepted Answer

Tardive dyskinesia

Answer

Serotonin syndrome

Answer

Priapism

Answer

Withdrawal seizures

Question 6

The term 'extrapyramidal side effects' refers to:

Accepted Answer

Neurological symptoms resulting from antipsychotic use

Answer

Psychological symptoms resulting from antidepressant use

Answer

Gastrointestinal symptoms resulting from anxiolytics

Answer

Cardiovascular symptoms resulting from benzodiazepines

Question 7

Which among the following is not a neurotransmitter receptor?

Accepted Answer

Enzymatic

Answer

Ionotropic

Answer

Metabotropic

Answer

Transporter

Question 8

The basal ganglia's primary function is to:

Accepted Answer

Control voluntary movement

Answer

Process emotions

Answer

Regulate memory

Answer

Produce neurotransmitters

Question 9

What is the primary mechanism of action of benzodiazepines, commonly used to treat anxiety disorders?

Accepted Answer

Potentiation of GABA-mediated inhibitory neurotransmission

Answer

Enhancement of glutamate release

Answer

Blockade of dopamine receptors

Answer

Activation of serotonin transporters

Question 10

Neuroleptics and antipsychotics are terms used to describe which class of medications?

Accepted Answer

Medications used to treat psychosis

Answer

Medications used to treat epilepsy

Answer

Medications used to treat depression

Answer

Medications used to treat Alzheimer's disease

Question 11

Which of the following antipsychotics is considered a first-generation or typical antipsychotic?

Accepted Answer

Chlorpromazine

Answer

Clozapine

Answer

Risperidone

Answer

Olanzapine

Question 12

What is the primary mechanism of action of atypical antipsychotics, which are often preferred due to their improved side effect profile?

Accepted Answer

Combined blockade of dopamine D2 and serotonin 5-HT2 receptors

Answer

Selective blockade of dopamine D2 receptors

Answer

Enhancement of dopamine release

Answer

Inhibition of acetylcholine reuptake

Question 13

Which neurotransmitter is primarily involved in the brain's reward system and motivation?

Accepted Answer

Dopamine

Answer

Serotonin

Answer

GABA

Answer

Noradrenaline

Question 14

Which neurotransmitter is primarily responsible for mood elevation and motivation?

Accepted Answer

Dopamine

Answer

Serotonin

Answer

GABA

Answer

Noradrenaline

Question 15

What is the primary function of the blood-brain barrier?

Accepted Answer

Protects the brain from harmful substances in the blood

Answer

Facilitates the entry of essential nutrients into the brain

Answer

Controls the release of neurotransmitters from neurons

Answer

Regulates the flow of cerebrospinal fluid

Question 16

Which type of neuron transmits sensory information towards the central nervous system?

Accepted Answer

Afferent neuron

Answer

Efferent neuron

Answer

Interneuron

Answer

Motor neuron

Question 17

Which neurotransmitter is crucial for memory consolidation?

Accepted Answer

Acetylcholine

Answer

Glutamate

Answer

Glycine

Answer

Dopamine

Question 18

Which of the following is NOT a typical response mediated by the sympathetic nervous system?

Accepted Answer

Increased digestion

Answer

Increased heart rate

Answer

Dilated pupils

Answer

Increased blood flow to skeletal muscles

Question 19

Which neurotransmitter is implicated in the development of psychotic disorders?

Accepted Answer

Dopamine

Answer

Serotonin

Answer

Acetylcholine

Answer

Noradrenaline

Question 20

Which neuroimaging technique provides detailed images of brain structure and function?

Accepted Answer

Magnetic resonance imaging (MRI)

Answer

Electroencephalography (EEG)

Answer

Positron emission tomography (PET)

Answer

Transcranial magnetic stimulation (TMS)

Question 21

Which part of the brain is responsible for regulating body temperature, thirst, and hunger?

Accepted Answer

Hypothalamus

Answer

Cerebrum

Answer

Cerebellum

Question 22

Which neurotransmitter is primarily responsible for the transmission of signals across synapses in the central nervous system?

Accepted Answer

Acetylcholine

Answer

Noradrenaline

Answer

Serotonin

Answer

Dopamine

Question 23

Which of the following is the outermost layer of the meninges, a protective covering of the brain and spinal cord?

Accepted Answer

Dura mater

Answer

Pia mater

Answer

Arachnoid mater

Answer

Subarachnoid space

Question 24

Which type of neuron is responsible for transmitting sensory information from the periphery to the central nervous system?

Accepted Answer

Afferent neuron

Answer

Interneuron

Answer

Efferent neuron

Answer

Glial cell

Question 25

What is the primary function of the blood-brain barrier?

Accepted Answer

Protects the brain from potentially harmful substances in the blood

Answer

Facilitates nutrient transport into the brain

Answer

Regulates blood pressure in the brain

Question 26

Which of the following is a neurodegenerative disease that primarily affects the motor system?

Accepted Answer

Parkinson's disease

Answer

Multiple sclerosis

Answer

Alzheimer's disease

Answer

Epilepsy

Question 27

Which part of the spinal cord is responsible for transmitting motor signals from the brain to the body?

Accepted Answer

Ventral horn

Answer

Dorsal horn

Answer

Lateral horn

Question 28

Which of the following techniques is used to visualize and obtain detailed images of the brain and its structures?

Accepted Answer

Magnetic resonance imaging (MRI)

Answer

Electroencephalography (EEG)

Answer

Computed tomography (CT) scan

Answer

Ultrasound

Question 29

What is the main role of the autonomic nervous system?

Accepted Answer

Regulates involuntary functions such as heart rate, digestion, and respiration

Answer

Processes sensory information

Answer

Controls voluntary movements