Generally, Nerve Impulses Do Not Move "Backward" Along a Series

question 6

Multiple Choice

Generally, nerve impulses do not move "backward" along a series of neurons. What is the reason for this?

• A) There is a short refractory period during which sodium gates cannot open and an action potential cannot move backwards.
• B) Once the signal has passed, the nerves separate from each other so it cannot go backwards.
• C) At the synapse, the presynaptic membrane has receptors, ensuring the transmission only goes one way.
• D) Once the sodium channels open, they cannot be closed.
• E) The resting potential of the neuron prevents it from conducting an impulse.

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Definitions:

Retinal Disparity

The slight difference in the visual images that reach each eye, leading to depth perception.

Stroboscopic Movement

An optical illusion where continuous motion is perceived from a series of rapidly presented, static images.

Retinal Disparity

The slight difference in the visual images that each eye perceives because of the varying angles from which each eye views the world, contributing to depth perception.

Blindsight

A condition in which a person can respond to visual stimuli without consciously perceiving them, often occurring after damage to the primary visual cortex.