Action Potentials Travel Down Axons Because _______

question 43

Multiple Choice

Action potentials travel down axons because _______.

• A) sensory signals stimulate axons at many points along their lengths
• B) potassium moves rapidly down the length of the axon,triggering action potentials as it does so
• C) sodium moves rapidly down the length of the axon,triggering action potentials as it does so
• D) positive sodium ions entering the neuron at one spot trigger an action potential at a neighboring spot on the membrane
• E) positive potassium ions entering the neuron at one spot trigger an action potential at a neighboring spot on the membrane

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Definitions:

Distal Stimulus

Objects or events in the external world that provide the physical energy that is then converted by the sensory organs into neural energy, leading to perception.

Occipital Stimulus

A stimulus that targets the occipital lobe of the brain, primarily involved in visual processing.

Proximal Stimulus

The physical energy from a stimulus that directly interacts with sensory receptors.

Agnosias

A class of neurological disorders marked by the inability to recognize objects, people, sounds, shapes, or smells while other sensory functions remain intact.