Question

• a neuron at rest is known as its ………………………. this is when a neuron stable electrical charge difference between the inside and the outside of the cell, which is resting potent.
• a neuron receives incoming signals at its dendrites. if the stimulation is strong enough to reach the ………………………, the neuron will fire.
• when the neuron is stimulated strongly enough, an action potenti is triggered,. this causes sodium ions to rush in and flip the charge to positive in a process is called ……………………….
• after the signal passes, the neuron works to restore its negative charge by pushing positive ions back out, a process called ………………………. during this resetting time, the neuron is in a brief ………………………, meaning it cannot fire again until it has fully recovered.

Explanation:

1. First blank (neuron at rest term): The stable electrical charge difference of a neuron at rest is its resting potential (the given "resting potent" is likely a typo, correct term is resting potential).
2. Second blank (threshold for firing): A neuron fires when stimulation reaches the threshold (the minimum level of stimulation needed to trigger an action potential).
3. Third blank (process of sodium influx): The process where sodium ions rush in and flip the charge positive is depolarization (this is the phase of action potential where the membrane potential becomes less negative, then positive).
4. Fourth blank (restoring negative charge): Pushing positive ions out to restore negative charge is repolarization (follows depolarization, restores the negative resting potential).
5. Fifth blank (refractory period): The brief time when a neuron can’t fire again is the refractory period (absolute or relative, during which it recovers).

Answer:

1. resting potential (for the first dashed box: "A neuron at rest is known as its [resting potential]")
2. threshold (for the box after "reach the": "If the stimulation is strong enough to reach the [threshold]")
3. depolarization (for the box after "process is called": "This causes sodium ions to rush in and flip the charge to positive in a process is called [depolarization]")
4. repolarization (for the box before "During this resetting time": "a process called [repolarization]")
5. refractory period (for the box after "brief": "the neuron is in a brief [refractory period]")