In Step 4 of a Neural Reflex, A(n)________ Stimulated to Threshold

question 122

Multiple Choice

In step 4 of a neural reflex, a(n) ________ stimulated to threshold conducts action potentials along its axons into the periphery.

• A) sensory neuron
• B) dorsal root ganglia
• C) motor neuron
• D) dorsal horn
• E) interneuron

---

Definitions:

Neuron

A specialized cell transmitting nerve impulses; a nerve cell, fundamental unit of the nervous system.

EPSP

Stands for Excitatory Postsynaptic Potential, a temporary increase in postsynaptic membrane potential caused by the flow of positively charged ions into the postsynaptic cell, making it more likely that the cell will fire an action potential.

Depolarization

A decrease in membrane potential that makes the interior of a cell less negative compared to the outside, crucial for nerve impulse transmission.

Voltage-Gated Channel

A type of protein channel in cell membranes that opens or closes in response to changes in electrical membrane potential.