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How does the all or none principle relate to the transmission of a nerve impulse?
Wiki User
∙ 13y ago
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.
Wiki User
∙ 13y ago
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Which travels quicker through the body a nerve impulse or a hormons?
a nerve impulse
The neurotransmitters of a neutron enable a nerve impulse to do what?
they transport the nerve impulse through the synapses (:
What are the small sacs within the axon terminal called?
They are called as vesicles. They are constantly created. They contents the neurotransmitter. Neurotransmitter is required for transmission of the nerve impulse.
What nerve initiates the SA node to initiate an impulse?
vagus nerve
The speed of nerve impulse transmission through the axon of a sensory neuron will be quickest in?
I'm guessing; "myelinated nerve fibres" contrary to the much slower "non-myelinated nerve fibres"
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 use of sodium in diclofenac sodium?
It is used for transmission of nerve impulse
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
Where does a nerve impulse start?
A nerve impulse starts at the dendrite
Which travels quicker through the body a nerve impulse or a hormons?
a nerve impulse
