The Central Nervous System: Interactive Quizzes for Medical Students

Question 1

Which of the following is NOT a neurotransmitter in the central nervous system?

Accepted Answer

Insulin

Answer

Glutamate

Answer

Dopamine

Question 2

Which region of the brain is **NOT** involved in processing sensory information?

Accepted Answer

Cerebellum

Answer

Cerebrum

Answer

Brainstem

Answer

Thalamus

Question 3

The protective layers surrounding the spinal cord are collectively known as the:

Accepted Answer

Meninges

Answer

Dura mater

Answer

Pia mater

Answer

Arachnoid mater

Question 4

Which part of the brain is primarily responsible for maintaining balance and coordination?

Accepted Answer

Cerebellum

Answer

Brainstem

Answer

Hypothalamus

Answer

Limbic system

Question 5

The primary visual cortex is located in which lobe of the cerebrum?

Accepted Answer

Occipital lobe

Answer

Frontal lobe

Answer

Parietal lobe

Answer

Temporal lobe

Question 6

Which neurotransmitter is primarily responsible for inhibitory synaptic transmission in the CNS?

Accepted Answer

GABA

Answer

Glutamate

Answer

Glycine

Answer

Serotonin

Question 7

The blood-brain barrier is primarily formed by which type of cell?

Accepted Answer

Astrocytes

Answer

Neurons

Answer

Oligodendrocytes

Answer

Microglia

Question 8

Which of the following is a key function of the hippocampus?

Accepted Answer

Memory formation

Answer

Motor control

Answer

Emotional regulation

Answer

Language processing

Question 9

Parkinson's disease is characterized by a progressive loss of function in which neurotransmitter system?

Accepted Answer

Dopaminergic

Answer

Serotonergic

Answer

Glutamatergic

Answer

GABAergic

Question 10

Which type of stroke occurs most frequently?

Accepted Answer

Ischemic stroke

Answer

Hemorrhagic stroke

Answer

Transient ischemic attack (TIA)

Answer

Subarachnoid hemorrhage

Question 11

Which of the following primary functions is NOT performed by the central nervous system?

Accepted Answer

Detoxifying the blood

Answer

Receiving and processing sensory information

Answer

Controlling body movements and coordination

Answer

Regulating emotions and behaviors

Question 12

Which of the following is the outermost layer of the spinal cord?

Accepted Answer

Dura mater

Answer

Pia mater

Answer

Arachnoid mater

Answer

Ependyma

Question 13

Which neurotransmitter is primarily responsible for muscle contraction?

Accepted Answer

Acetylcholine

Answer

Dopamine

Answer

Serotonin

Answer

GABA

Question 14

What is the name of the fluid-filled cavities within the brain?

Accepted Answer

Cerebral ventricles

Answer

Interstitial spaces

Answer

Lymph nodes

Answer

Blood vessels

Question 15

Which region of the brain is associated with higher cognitive abilities such as reasoning and decision-making?

Accepted Answer

Cerebrum

Answer

Cerebellum

Answer

Brainstem

Answer

Spinal cord

Question 16

Which protective mechanism restricts the entry of certain substances into the brain?

Accepted Answer

Blood-brain barrier

Answer

Meninges

Answer

Corpus callosum

Answer

Ventricular system

Question 17

Which of the following is NOT a lobe of the cerebrum?

Accepted Answer

Motor lobe

Answer

Frontal lobe

Answer

Parietal lobe

Answer

Occipital lobe

Question 18

What is the pathway that transmits sensory information from the periphery to the central nervous system called?

Accepted Answer

Ascending pathway

Answer

Descending pathway

Answer

Autonomic pathway

Answer

Reflex pathway

Question 19

Which type of neuron carries electrical signals away from the cell body?

Accepted Answer

Efferent neuron

Answer

Afferent neuron

Answer

Interneuron

Answer

Glial cell

Question 20

What is the primary function of the corpus callosum?

Accepted Answer

Connects the hemispheres of the brain

Answer

Protects the brain from injury

Answer

Transmits sensory information to the spinal cord

Answer

Regulates sleep-wake cycles

Question 21

A patient presents with difficulties coordinating voluntary movements and maintaining balance. Which of the following brain structures is most likely affected?

Accepted Answer

Cerebellum

Answer

Hypothalamus

Answer

Amygdala

Answer

Hippocampus

Question 22

In which lobe of the brain is the primary motor cortex located?

Accepted Answer

Frontal lobe

Answer

Occipital lobe

Answer

Temporal lobe

Answer

Parietal lobe

Question 23

Which of the following is NOT a function of the spinal cord?

Accepted Answer

Initiating voluntary movements

Answer

Controlling reflexes

Answer

Conducting motor impulses from the brain

Answer

Relaying sensory information to the brain

Question 24

Damage to Broca's area is most likely to result in which of the following symptoms?

Accepted Answer

Difficulty speaking fluently

Answer

Inability to understand spoken language

Answer

Loss of sensation in the face

Answer

Impaired vision

Question 25

Which neurotransmitter is primarily associated with mood regulation and sleep?

Accepted Answer

Serotonin

Answer

Dopamine

Answer

GABA

Answer

Acetylcholine

Question 26

The blood-brain barrier is primarily formed by:

Accepted Answer

Tight junctions between endothelial cells

Answer

Oligodendrocytes

Answer

Microglia

Answer

Astrocytes

Question 27

A patient with a spinal cord injury at the level of T10 would likely experience loss of sensation and motor function in the:

Accepted Answer

Lower extremities

Answer

Face

Answer

Upper extremities

Answer

Trunk

Question 28

The hippocampus plays a primary role in:

Accepted Answer

Formation of new memories

Answer

Regulation of emotions

Answer

Control of voluntary movement

Answer

Processing visual information

Question 29

Which of the following is a key characteristic of the autonomic nervous system?

Accepted Answer

It controls involuntary functions

Answer

It is primarily involved in voluntary movement

Answer

It is responsible for conscious perception

Answer

It is directly controlled by the cerebral cortex

Question 30

Tremors and muscle rigidity in Parkinson's disease are primarily caused by degeneration of neurons in the:

Accepted Answer

Substantia nigra

Answer

Caudate nucleus

Answer

Putamen