In __________ conduction, the impulse jumps from node of Ranvier to node of Ranvier.

Question

BlackTom AI · Accepted Answer

The question asks about a specific mode of nerve impulse conduction.
Option 1: continuous. This option describes the slow, non-saltatory conduction that occurs along unmyelinated fibers where the action potential propagates along every segment of the membrane. It is not the mechanism described in the prompt.
Option 2: saltatory. This is the correct descriptor for conduction that leaps from one node of Ranvier to the next, skipping myelinated segments. The myelin sheath insulation creates nodes where ion channels are concentrated, enabling rapid depolarization at these gaps and thus saltatory conduction.
Option 3: critical. This term does not characterize the mode of impulse conduction in neuroscience context; it is not used to describe how action potentials travel along axons.
Option 4: propagation. While “propagation” is a general term for the spreading of the action potential along the axon, it does not specify the jumping mechanism between nodes and therefore is too vague to be the precise answer.
Option 5: indirect. This word does not accurately describe the specific mechanism of impulse travel in myelinated fibers; it could imply something ancillary or non-direct, which is misleading in this context.
In summary, among the options, saltatory conduction best fits the description of the impulse jumping from node of Ranvier to node of Ranvier, matching the classic mechanism in myelinated axons.

In __________ conduction, the impulse jumps from node of Ranvier to node of Ranvier.单项选择题

类似问题

Rapid conduction of action potentials around the nervous system is achieved in several ways, including:

When an axon is myelinated, one of the consequences is the redistribution of:

Which of the following statements with regards to myelinated and unmyelinated axons is CORRECT? (1 mark)

What is the primary function of the nodes of Ranvier in a myelinated neuron?

The Myelin sheath;

In __________ conduction, the impulse jumps from node of Ranvier to node of Ranvier.

In a myelinated axon, the action potential _____ the segments of myelin, going from one node of Ranvier to the next.

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