Which statement BEST describes the role of the Nodes of Ranvier in saltatory conduction?
They insulate the axon, preventing ion leakage.
They synthesize neurotransmitters for synaptic transmission.
They allow for faster action potential propagation by concentrating voltage-gated channels.
They slow down action potential propagation, allowing for greater control.
Related Questions
Mark the following statements as true/false and choose the correct option from the codes given below
I. Neuroglial cells are the packing and supporting cells found in the brain and spinal cord
II. Oligodendrocytes is a category of glial cells that forms myelin sheaths around the axon
III. Microglia provides mechanical support to the neurons
IV. Astrocytes communicate with one another through potassium channels
Codes
I II III IV
True True False False
False True True False
False False True True
True False True False
Mark the following statements as true/false and choose the correct option from the codes given below
I. Neuroglial cells are the packing and supporting cells found in the brain and spinal cord
II. Oligodendrocytes is a category of glial cells that forms myelin sheaths around the axon
III. Microglia provides mechanical support to the neurons
IV. Astrocytes communicate with one another through potassium channels
Codes
I II III IV
True True False False
False True True False
False False True True
True False True False
An experimental drug selectively inhibits the function of astrocytes. What direct consequence would MOST likely be observed in neuronal function?
Increased rate of neurotransmitter synthesis
Enhanced myelination of axons
Impaired regulation of the extracellular ionic environment
Accelerated action potential propagation
