Neuroscience Fundamentals Quiz

What is the primary function of dendrites in neurons?

• Conduct electrical impulses

• Receive signals from other neurons

• Produce myelin sheath

• Release neurotransmitters

Which part of the neuron is responsible for generating an action potential?

• Axon

• Cell Body (soma)

• Dendrites

• Synaptic Terminal

What is the role of myelin in neurons?

• Regulating ion flow

• Receiving synaptic inputs

• Insulating the axon

• Generating neurotransmitters

Which type of ion channel opens in response to changes in membrane potential?

• Ligand-gated Ion Channels

• Voltage-gated Ion Channels

• Tension-gated Ion Channels

• Chemical-gated Ion Channels

What is the typical resting membrane potential of a neuron?

• 100 millivolts

• -70 millivolts

• -50 millivolts

• 0 millivolts

Which cells produce myelin in the central nervous system?

• Microglia

• Oligodendrocytes

• Astrocytes

• Schwann cells

What is the main function of the sodium-potassium pump?

• Hyperpolarize the membrane

• Release neurotransmitters

• Maintain the resting membrane potential

• Depolarize the membrane

Which neurotransmitter is primarily inhibitory in the central nervous system?

• Glutamate

• Dopamine

• GABA

• Serotonin

What occurs during the depolarization phase of an action potential?

• Potassium ions flow out

• Sodium ions flow in

• Chloride ions flow in

• Calcium ions flow out

What is the function of synaptic vesicles?

• Produce myelin

• Insulate the axon

• Transport ions across the membrane

• Store and release neurotransmitters