Myelination of Axons Requires Precise Spacing of Nodes, Adequate Seals

question 57

Essay

Myelination of axons requires precise spacing of nodes, adequate seals between the myelin sheaths and axon, and proper distributions of sodium and potassium pumps at the nodes. Describe why such a delicate balance is necessary for an adequate increase in the velocity of conductance along the axon.

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Definitions:

Absolute Threshold

The minimum intensity of a stimulus that one can detect half the time.

Psychological Dimension

An aspect of an individual's mental or emotional state that influences their behavior and perception of the world.

Specialized Brain Cells

Neurons or glial cells in the brain that have specific functions, such as sensory processing, signal transmission, or support of neural activity.

Figure And Ground

A principle in visual perception where the figure is the object of focus and the ground is the background against which it stands.