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The nerve impulse (action potential) either occurs, or it doesn't, depending on whether or not a sufficient summation of inputs from dendrites at the axon hillock (the trigger point) has occurred, either temporally or spatially.
That is, if a large enough number of dendrites have received inputs from other neurons such that their total contribution of electrotonic impulses to the axon hillock results in enough Na ions there to trigger the action potential, or, if one or more dendrites is/are stimulated so often or quickly that, again, there are enough Na ions pushed to the axon hillock to trigger the action potential, then the nerve will "fire". If not enough Na ions are caused to congregate at the axon hillock by either means, then the action potential will not occur, and there will be no transmission of a nerve impulse.
What else can I help you with?
Which travels quicker through the body a nerve impulse or a hormons?
a nerve impulse
What transmits a nerve impulse at the highest rate?
Myelinated nerve fibers transmit nerve impulses at the highest rate due to the presence of insulation provided by the myelin sheath. This insulation helps the nerve impulse jump quickly from one node of Ranvier to the next, allowing for rapid transmission.
When the nerve impulse encounters a myelin-covered section of neuron?
When the nerve impulse encounters a myelin-covered section of a neuron, it jumps between the nodes of Ranvier, allowing for faster transmission speed due to saltatory conduction. Myelin acts as an insulator, preventing the impulse from dissipating and increasing the efficiency of signal transmission along the neuron.
What is the material surrounding the axon that increases the speed of the nerve impulse?
The material surrounding the axon that increases the speed of the nerve impulse is called myelin. Myelin is a fatty substance that acts as an insulating layer, allowing for faster transmission of electrical signals along the axon.
The neurotransmitters of a neutron enable a nerve impulse to do what?
Neurotransmitters in a neuron allow a nerve impulse to be transmitted from one neuron to another by crossing the synapse and binding to receptors on the receiving neuron. This triggers an electrical or chemical signal to continue the nerve impulse along the neural pathway.
How does a nerve impulse follow all or nothing principle?
How does a nerve impulse follow the all-or-nothing principle???
What is the difference between synaptic and nerve impulse transmission?
Synaptic transmission is chemical, while nerve impulse or axonal transmission is electrical.
What is the difference in transmission between myelinated and unmyelinated fibers?
Impulse transmission on an unmyelinated nerve fiber is much slower than the impulse transmission on a myelinated nerve fiber.
What is nerve impulse transmission?
An action potention.
Is the impulse transmission for the spinal nerve sensory or motor?
No
What is responsible for transmission of nerve impulse across a synapse?
NEUROTRANSMITTER is responsible for transmission of nerve impulses.Eg.dopamine,acetylcholine etc.
What is the range for nerve impulse transmission through the human body?
over 9000
What is quicker a nerve impulse or a hormone?
nerve impulse
What are the factors involved in the transmission of a nerve impulse?
action potational. volage change, threshold etc
The duration of a nerve impulse is approximately?
The duration of a nerve impulse is very short, typically around 1-2 milliseconds. This rapid transmission allows for quick communication between neurons and helps to coordinate various body functions.
Which travels quicker through the body a nerve impulse or a hormons?
a nerve impulse
Can banana peelings improve the nerve impulse transmission?
Not specifically but if you had a potassium shortage bananas are a good source of potassium.
