When an Action Potential Reaches the End of the Axon

question 366

Multiple Choice

When an action potential reaches the end of the axon terminal, it:

• A) reverses direction and returns to the cell body.
• B) causes synaptic vesicles to break open and release molecules of neurotransmitter.
• C) causes pores on the axon terminal to open and receive neurotransmitters from other neurons.
• D) hops across the synaptic cleft to the next neuron.

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Definitions:

Receptor Cells

Specialized cells that detect and respond to specific types of external stimuli, such as light, sound, or chemicals, converting them into electrical signals for the nervous system.

Rods

Photoreceptor cells in the retina of the eye that function well in low light and are responsible for night vision.

Cones

Photoreceptor cells in the retina of the eye that function best in bright light and enable the perception of color and fine detail.

Dark Adaptation

The process by which the eyes increase their sensitivity to low levels of light, allowing for better vision in the dark.