20 Questions
Which part of the neuron takes the signal away from the cell body and communicates with other neurons or effector organs?
Axon
Which type of neuron is most common and usually intermediate, integratory, or motor?
Multipolar
What is the gap between internodes of myelinated nerve fibers called?
Node of Ranvier
Which cells provide structural and metabolic support to axons in the peripheral nervous system?
Schwann cells
What increases the conduction velocity in nerve fibers?
Myelination
What is the function of the autonomic nervous system?
Connects CNS to other tissues
What does depolarization of the neuron involve?
Sudden change of membrane potential with influx of sodium (passively)
What is the main component of the central nervous system (CNS)?
Brain and spinal cord
What is the resting potential of a neuron?
Charge difference when neuron is not firing
What are the rapid changes in charge when a neuron is firing known as?
Action potential
What is the main function of the autonomic nervous system?
Regulation of involuntary bodily functions
Which process involves the restoration of membrane potential with potassium efflux in a neuron?
Repolarization
What is the role of the refractory period in a neuron?
Restores the resting potential
Where are cell bodies usually located in the neuron?
In the central nervous system
What is the charge difference between inside and outside of a cell known as?
Membrane potential
What is the main function of the terminal effector neurons?
Initiating action potentials
In which type of neuron is the rough endoplasmic reticulum (Nissl body) present in the axon?
Pseudounipolar neurons
What is the significance of the blue-stained myelin in neuropil in nerve fibers?
Indicates increased synaptic activity
Which cells are responsible for myelinating axons in the central nervous system (CNS)?
Oligodendrocytes
What is the function of saltatory conduction in myelinated nerve fibers?
Facilitates rapid transmission of action potentials
Test your knowledge of nervous tissue and the nervous system with this quiz. Topics include the central nervous system, peripheral nervous system, somatic nervous system, autonomic nervous system, and membrane potential.
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