axon hillock

For many years, it had been believed that the axon hillock was the usual site of action potential initiation.

Summation is the adding together of these impulses at the axon hillock.

Emerging out from the soma is the axon hillock.

When a neuron fires an action potential, it is initiated at the axon hillock.

The loss of staining begins near the nucleus and spreads toward the axon hillock.

The axon hillock is the place where the soma connects to the axon.

This depolarization will travel towards the axon hillock, diminishing exponentially with time and distance.

Immediately after the axon hillock is the axon.

The part of the axon where it emerges from the soma is called the axon hillock.

The action potential generated at the axon hillock propagates as a wave along the axon.

The axon hillock can act as a barrier for its lateral spread even though it has no transmembrane segment.

If several such events occur in a short time, the axon hillock may become sufficiently depolarized for the voltage-gated sodium channels to open.

Once this initial action potential is initiated, principally at the axon hillock, it propagates down the length of the axon.

The axon hillock is a specialized domain of the neuronal cell body from which the axon originates.

While the axon and axon hillock are generally involved in information outflow, this region can also receive input from other neurons.

The axon leaves the soma at a swelling called the axon hillock, and can extend for great distances, giving rise to hundreds of branches.

The axon hillock is a specialized part of the cell body (or soma) of a neuron that connects to the axon.

Besides being an anatomical structure, the axon hillock is also the part of the neuron that has the greatest density of voltage-dependent sodium channels.

Some fraction of an excitatory voltage may reach the axon hillock and may (in rare cases) depolarize the membrane enough to provoke a new action potential.

This is due to the fact that the postsynaptic potentials travel through the unmyelinated dendrites to the axon hillock, where they are combined in summation.

This all-or-nothing phenomenon originates at the axon hillock, resulting in a depolarization of the intracellular environment which propagates down the axon.

The chain reaction that begins in the axon hillock is a strong electrical current called an action potential that flows down the axon to the next synapse.

The Mauthner cell axon hillock is surrounded by a dense formation of neuropil, called the Axon cap.

Therefore, the SGC sheath of sympathetic neurons must extend even further to cover the axon hillock near the somata.

In neurons receiving axonal transection, central chromatolysis is observed in the area between the nucleus and the axon hillock following.