What is a depolarized neuron?

If it is sufficiently depolarized it will fire an action potential A depolarized neuron will successfully pass a message. If you have a polarized neuron will not be able to feel a burn, etc.

polarized, depolarized, repolarized

Stimulus A will depolarize a neuron just barely above the threshold. Stimulus B depolarizes a neuron to 10 mV beyond the threshold.

There is electrical potential difference between out side of the cell and inside of the cell, in case of the polarized neuron. This electrical difference is lost in case of depolarization. That is what can be said roughly.

Excitation and Inhibition occur in the neurons. Excitation is when a neuron becomes depolarized and fires an action potential. Inhibition is when a neuron becomes hyperpolarized preventing it from firing an action potential.

When a threshold stimulus is presented to the neuron, it is depolarized, making it possible for the neurotransmitter to be released into the synaptic cleft.

When a neuron is polarized, usually by the influx of chloride ions into the neuron, it is incapable of creating an action potential (incapable of firing). Only when the neuron returns to a resting potential, via pumping ions back across the membrane, can it be depolarized (sodium ion influx) to generate an action potential.

The motor end plate will be depolarized. If you found this answer for A&P then on the next unanswered question you come across once you find the answer type it in to help your fellow brothers out. The motor end plate will be depolarized.

Once action Potential reaches Dendrides of the Neuron, the cell is Depolarized, causing the cell (neuron) to release a chemical signal, known as a nuerotransmitter, from the Pre-synsaptic cleft, where it will bind to recepters on the Post-synaptic cleft.

A neuron wouldn't be at rest if it had positive membrane potential. It would fire an action potential. If the neuron remained depolarized then it will fire controllably, and nearby cells are then at risk of being overstimulated. If this activity spreads far enough then it will lead to an epileptic seizure - which is also damaging to neurons.

After the generation and propagation of an action potential along a neuron, the cell becomes depolarized to the point where there is no potential for further signaling until the cell re-polarizes through the action of ion pumps. This very brief period is called the refractory state.

A stimulus first causes sodium channels to open, sodium ions rush into the neuron, so the neuron becomes more positive and becomes depolarized. When potassium channels do open, potassium rushes out of the cell, reversing the depolarization, also at about this time, sodium channels start to close. This causes the action potential to go back toward -70 mV (a repolarization).

After a neuron fires, there is a refractory period where certain factors in the neuron prevent it from being depolarized again. This is made possible by an "overshoot" of polarization (returning to a much stronger negative ion charge inside the neuron) after the action potential passes. This ensures that voltage-controlled ion channels remain closed for a small period of time and do not become overactive through continuous restimulation.

they are a part of the neuron that connects neuron to neuron

The Inter-neuron (also known as the local circuit neuron, relay neuron or the association neuron) is the neuron which connects the afferent and the efferent neurons in the neural pathways.

Tetrodotoxin is a neurotoxin. It acts to neuronal depolarization and prevent subsequent action potentials via binding to the voltage gated sodium channels on the cell membrane. In a healthy neuron, these voltage gated sodium channels are critical for generation of an action potential in response to graded depolarization (I.e. EPSP). As the neuron is depolarized, these channels open and allow for the influx of sodium ions into the cell, which in turn further depolarized the neuron in a positive feedback loop. Tetrodotoxin (TTX) is the toxin found in blowfish (fugu). Another harmful substance for the nervous system is manganese which causes manganism, resembling some aspects of Parkinson's disease. Off the top of my head: 6-HO-dopamine, MPTP, ibotenic acid. Wikipedia these neurotoxins for their respective mechanisms of action Source: degrees in neuroscience and neuropharmacology

A neuron is called a inter-neuron because that specific neuron takes impulse from one neuron to a next neuron. For example your sensory neuron sends a impulse that you had felt a hot object. It goes through the spine to a inter-neuron to a motor neuron (this processes is called a reflex). Then the motor neuron tells your muscles in your hand to move

The nerve impulse travels through and reaches the threshold potential which opens Na+ Channels in the cell membrane. The Na+ ions diffuse into cell. The charges reverse at that point on the neuron, and which the cell becomes depolarized. Positive inside; negative outside. source: FM

Generally speaking the neuron is becoming depolarized, but to be more specific Phases of Action Potential: 1. Resting Potential: Vm = -65mV 2. Rising Phase: Vm = 40mV; Rapid depolarization of the membrane. 3. Overshoot: When the inside of the neuron is positively charged with respect to the outside of the membrane. 4. Falling Phase: Rapid depolarization until the membrane in more negative than the resting potential (-65mV) a. The last part of the falling phase is called the undershoot, or after-hyperpolarization.

a relay neuron is the neuron that picks up the message from the sensory neuron and delivers it to the motor neuron in the spinal cord or the brain

A relay neuron is the neuron that picks up the message from the sensory neuron and delivers it to the motor neuron in the spinal cord then to the brain.

sensory neuron or receptor neuron.

Interneuron, or association neuron, or relay neuron, or connector neuron, or local circuit neuron.

During depolarization, sodium (Na) rushes into the neuron through Na channels (at the Nodes of Ranvier between the bundles of myelin "insulation"). Less Na in the extracellular fluid would mean there would be less to rush in. So, the neuron would not be depolarized as well. The resting membrane potential would be more positive on the inside.

one type of neuron is the motor neuron