During Saltatory Conduction, Action Potentials Are Generated

question 105

Multiple Choice

During saltatory conduction, action potentials are generated:

• A) only at nodes of Ranvier of myelinated axons.
• B) when the entire axolemma is depolarized.
• C) along the entire length of the unmyelinated axon.
• D) regardless if threshold is reached.

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Definitions:

Corticospinal Tract

A set of nerve pathways that travel from the cerebral cortex in the brain down the spinal cord, involved in controlling voluntary muscle movements.

Corticobulbar Tract

Neural pathways that conduct impulses from the brain's cortex to the brainstem, primarily involved in controlling movements of the face and neck.

Corpus Callosum

Largest commissure of the brain, connecting the cerebral hemispheres.

Cerebral Commissures

Bundles of nerve fibers that connect the two hemispheres of the brain, facilitating interhemispheric communication.