Neurophysics MCQs with Answers

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Neurophysics Online Quiz

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• Test Name: Neurophysics MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Neurophysics

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1 / 40

Which neurotransmitter is often associated with mood regulation?

Serotonin

Acetylcholine

Glutamate

2 / 40

What part of the brain controls voluntary movement?

Hippocampus

Motor cortex

Hypothalamus

3 / 40

What happens during repolarization?

Calcium ions enter the cell

Sodium ions enter the cell

Potassium ions exit the cell

4 / 40

What is neuroplasticity?

Brain's growth rate

Brain's ability to change

Brain's immune response

5 / 40

What is the primary excitatory neurotransmitter in the central nervous system?

Glycine

GABA

Glutamate

6 / 40

Which brain imaging technique measures electrical activity?

MRI

EEG

PET

7 / 40

What is the function of the myelin sheath?

Increase signal speed

Store neurotransmitters

Support neurons

8 / 40

What is the function of Schwann cells?

Remove waste products

Produce myelin in the PNS

Form the blood-brain barrier

9 / 40

What term describes the gap between the axon terminal and the dendrite of the next neuron?

Synapse

Node of Ranvier

Axon hillock

10 / 40

What is the function of glial cells?

Generate action potentials

Transmit sensory signals

Support and protect neurons

11 / 40

What is the main function of the hippocampus?

Motor control

Memory formation

Visual processing

12 / 40

Which part of the neuron transmits impulses away from the cell body?

Dendrite

Soma

Axon

13 / 40

What type of glial cell produces myelin in the central nervous system?

Schwann cells

Astrocytes

Oligodendrocytes

14 / 40

What is the refractory period in neuronal action potential?

Time when neuron can't fire

Time of signal reception

Time of maximum firing rate

15 / 40

What type of ion channel opens in response to a change in membrane potential?

Voltage-gated channel

Mechanically-gated channel

Ligand-gated channel

16 / 40

What is the main function of the autonomic nervous system?

Process sensory information

Control voluntary movements

Regulate involuntary functions

17 / 40

What type of synapse involves direct electrical communication between neurons?

Mixed synapse

Electrical synapse

Chemical synapse

18 / 40

What area of the brain is responsible for processing visual information?

Parietal lobe

Temporal lobe

Occipital lobe

19 / 40

What is the role of the sodium-potassium pump in neurons?

Maintain ion gradients

Transmit signals

Synthesize proteins

20 / 40

What is the function of the cerebellum?

Coordinate movement

Store memories

Process emotions

21 / 40

Which part of the neuron receives incoming signals?

Dendrites

Axon

Soma

22 / 40

What is the role of the blood-brain barrier?

Transmits signals

Protects the brain

Produces cerebrospinal fluid

23 / 40

What happens during depolarization?

Chloride ions enter the cell

Sodium ions enter the cell

Potassium ions exit the cell

24 / 40

What is the main role of the thalamus?

Control endocrine function

Relay sensory information

Regulate motor activity

25 / 40

What is the resting membrane potential of a typical neuron?

0 mV

-30 mV

-70 mV

26 / 40

What is long-term potentiation (LTP)?

Generation of new neurons

Weakening of synapses

Strengthening of synapses

27 / 40

What is the synaptic cleft?

Space between neurons

Part of the axon

Area within the dendrite

28 / 40

What neurotransmitter is primarily involved in muscle contraction?

Dopamine

Serotonin

Acetylcholine

29 / 40

What is a common method to measure brain activity through blood flow changes?

EEG

CT scan

fMRI

30 / 40

What mechanism ensures one-way propagation of an action potential?

Graded potential

Synaptic delay

Refractory period

31 / 40

What does an action potential's all-or-none principle mean?

Neuron fires in graded manner

Neuron fires only partially

Neuron fires completely or not at all

32 / 40

Which ion is most important for generating an action potential?

Chloride

Sodium

Calcium

33 / 40

What is the primary inhibitory neurotransmitter in the central nervous system?

Glutamate

GABA

Dopamine

34 / 40

What brain structure is involved in regulating sleep-wake cycles?

Cerebellum

Hypothalamus

Amygdala

35 / 40

Which ion channel is primarily responsible for maintaining the resting membrane potential?

Sodium leak channels

Potassium leak channels

Calcium leak channels

36 / 40

Which brain region is crucial for regulating heart rate and breathing?

Thalamus

Medulla oblongata

Cerebellum

37 / 40

What is the role of neurotransmitters in the nervous system?

Maintain resting potential

Form the myelin sheath

Transmit signals across synapses

38 / 40

What happens during hyperpolarization?

Membrane potential becomes more positive

Membrane potential becomes more negative

Membrane potential remains the same

39 / 40

What is the term for the brief period after an action potential during which a neuron cannot fire?

Synaptic delay

Absolute refractory period

Relative refractory period

40 / 40

What type of receptor is involved in fast synaptic transmission?

Nuclear receptors

Metabotropic receptors

Ionotropic receptors

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