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Its where there are a lot of sodium channels. Once the trigger zone is 'triggered' to threshold (from -70mV to -55mv), then an action potential occurs.
trigger zone in MOTOR neurons are in the axon hillock and in SENSORY neurons, they're in the 1st unmyelinated area (first node of ranvier).
What else can I help you with?
What happens to the neuron after an action potential is fired?
After an action potential is fired, the neuron goes through a refractory period where it cannot fire another action potential immediately. During this time, the neuron resets its electrical charge and prepares for the next signal.
What is the difference between the refractory period and the absolute refractory period in terms of neuronal signaling?
The refractory period is the time after a neuron fires when it cannot fire again, while the absolute refractory period is the specific part of the refractory period when the neuron is completely unable to fire, regardless of the stimulus.
What statements follow from the "all or none" law in relation to neuronal firing?
The "all or none" law states that a neuron will either fire at full strength or not at all in response to a stimulus. This means that once a neuron reaches its threshold for firing, it will generate an action potential of consistent strength. If the stimulus is below the threshold, the neuron will not fire. This law helps to ensure the reliability and efficiency of communication within the nervous system.
What is the difference between the way excitatory and inhibitory transmitters work?
As a rule more than one presynaptic action potential is needed to fire the postsynaptic neuron or muscle so that the trigger to initiate an action potential are either many subthreshold local potentials from different sources or from the same neuron received within a short period of time. The first case is called spatial summation and the second case is called temporal summation. Whether a postsynaptic potential (another term for a local potential) is excitatory or inhibitory depends on what ion channels are affected by the transmitter released from the presynaptic vesicles.
What is the definition of trigger mechanism?
A device which sets a machine in motion, usually rapidly.
What triggers at a point in which a neuron will fire?
Threshold
How do you shoot clays?
aim and fire Another answer: You do not aim a shotgun, you point a shotgun. You shoot where the target will be when the shot gets there, not where the target is when you pull the trigger. That is called "windage."
When several neurons are stimulated equally which one will fire first?
The neuron with the lowest threshold potential will fire first when several neurons are stimulated equally. Threshold potential is the minimum level of depolarization needed to trigger an action potential in a neuron. Neurons with lower threshold potentials are more excitable and will fire before neurons with higher threshold potentials.
Which is the last part of the neuron to be involved in the transmission of a neural impulse towards the next neuron?
Signalling ALONG a neuron is electrical, but signalling BETWEEN neurons is a chemical process. Neuron A 'passes' a message onto the next by releasing chemicals called neurotransmitters , which are then taken up by neuron B. The point at which these neurotransmitters are released from the neuron A is called the 'terminal bouton' and is the end of its axon. More specifically, it is the presynaptic membrane OF the terminal bouton at which the passing on of a message occurs.
What is the purpose of the second trigger on a black powder rifle?
It is called a set trigger. Pull the rear trigger all the way back until you hear a click,the front trigger is now set to fire the weapon with very little pressure.Do not set the trigger in this position unless you are ready to fire down range. It is extreamly dangerous if you are not carefull.
What is it called when you pull back a handgun?
not pulling the trigger, holding fire any other names??
Why should special care be given when using a double set trigger for hunting?
one trigger sets the gun to go off and the other fires it you must squeeze the first trigger then the second to fire the gun and if your not careful and pull the set trigger again instead of the second trigger the gun will not fire plus the second trigger being the fire trigger is usually a hair trigger meaning you barely have to pull it to make the gun fire
Minimum level of stimulation required to trigger a neural impulse?
The minimum level of stimulation required to trigger a neural impulse is known as the "threshold." This threshold is the minimum amount of neurotransmitter release or electrical stimulation needed to generate an action potential in a neuron. Below this threshold, the neuron will not fire an action potential.
Is the neuron ready to fire during the refractory period?
No, the neuron is not ready to fire during the refractory period. This period occurs immediately after the neuron has fired and is characterized by a temporary inability to generate another action potential.
What cause neuron to fire?
The neuron adds up all the excitatory and inhibitory inputs and fires when they reach its threshold of excitation.
Can a neuron fire half of its neurotransmitters?
no it's an "all or nothing"
When impulses from various sources have an additive effect on a neuron the process is called?
When impulses from various sources have an additive effect on a neuron, the process is called summation. This can occur through temporal summation, where multiple impulses from the same source rapidly fire in succession, or spatial summation, where impulses from different sources converge at the same time to reach the neuron's threshold for firing.
