Resting Membrane Potential For a normal, unstimulated neuron, there will be a la

Question

Resting Membrane Potential

For a normal, unstimulated neuron, there will be a larger concentration of __(1)___ ions outside of the neuron cell membrane and a larger concentration of __(2)_ ions just inside the neuron cell membrane. The resting membrane potential of a typical multipolar neuron is __(3)_ mV. The rmp is also due to the presence of active transport mechanisms on the neuron membrane called __(4)__. This transporter that is like a revolving door moves three __(5)__ ions outward and two __(6)___ ions inward. Finally, the intracellular location of negatively charged __(7)__ (macromolecules) determines the final rmp.

The Action Potential

The action potential begins with the neuron at resting membrane potential. If a stimulus occurs, the gates specific for the type of stimulus will start to open and allow ___(8)__ ions to enter. This causes the rmp to become less __(9)__ (charge) as it nears threshold. At threshold, __(10)__ voltage activated channels begin to open. In an example of __(11)___ feedback, more and more of these types of voltage activated gates will continue to open. Eventually, a voltage will be reached (+30 mV) at which these gates have closed. This phase of an action potential is called __(12)__.

At this time, __(13)___ voltage activated channels will open causing the peak of the action potential to turn downward. These channels continue to open until the voltage continues to decrease past threshold. This phase of the action potential is called __(14)__. Once the voltage has reached the rmp, it will still continue to decrease as these gates are notoriously slow to open. This results in a portion of the action potential that is more negative than the rmp called the __(15)__. The phase associated with this portion of the action potential is called __(16)__. Before returning to rmp, the active transport mechanisms called the __(17)___ will restore the ions back to their original locations.

Explanation / Answer

Based on the given data, fill the gaps with below responses.

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.