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Dendrites conduct both graded and action potential?
no, dendrites and cell bodies can only have graded potential. action potential only occurs in axons
What happens in the neurolemma as the result of an action potential?
It provides insulation to the axons and dendrites during depolarization or action potential.
What is the pathway of action potential through the conducting system?
From dendrites to cell body to axon to axon terminals, in case of nerve cells.
What effect does an action potential have on a vesicle?
It causes the vesicles (which are in the axon terminal) to move to the cell membrane at the end of the axon terminal, where they merge with the cell membrane, releasing their load of neurotransmitters into the synaptic cleft (gap), where they quickly diffuse to receptors in the post-synapticneuron's dendrites, initiating a graded potential which moves down the dendrites, along the soma,to the axon hillock where it can cause an action potential in that secondneuron.
What do axons and dendrites belong to?
I'm assuming you're talking about dendrites... And the dendrites are what receive signals on a neuron. Signals are delivered through the axon to the axon terminal, which passes the signal to another neuron's dendrites.
Dendrites conduct both graded and action potential?
no, dendrites and cell bodies can only have graded potential. action potential only occurs in axons
What happens in the neurolemma as the result of an action potential?
It provides insulation to the axons and dendrites during depolarization or action potential.
What is the pathway of action potential through the conducting system?
From dendrites to cell body to axon to axon terminals, in case of nerve cells.
What effect does an action potential have on a vesicle?
It causes the vesicles (which are in the axon terminal) to move to the cell membrane at the end of the axon terminal, where they merge with the cell membrane, releasing their load of neurotransmitters into the synaptic cleft (gap), where they quickly diffuse to receptors in the post-synapticneuron's dendrites, initiating a graded potential which moves down the dendrites, along the soma,to the axon hillock where it can cause an action potential in that secondneuron.
What do axons and dendrites belong to?
I'm assuming you're talking about dendrites... And the dendrites are what receive signals on a neuron. Signals are delivered through the axon to the axon terminal, which passes the signal to another neuron's dendrites.
Is an action potential is a phenomenon that either happens completely or doesn't happen at all?
The action potential is an all-or-none phenomenon.
How does the all or none principle relate to the transmission of a nerve impulse?
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 parts of a neuron is capable of generating a graded potential?
The dendrites portion of a neuron will generate a potential.
Where do most local potentials happen?
dendrites
What is the basic structure of a neuron?
A neuron consists of three major parts: The dendrites, cell body, and axon. Most, though not all, axons are covered with myelin sheath which is made up of glial cells. The ends of axons are further divided into axon terminals. The axon terminal of one neuron and the dendrites of another is separated by the synaptic cleft.
Which structures pertain to neurons?
Synapses, dendrites, dendritic spines (bumps on dendrites where synapses are often found), dendritic arbors (tree-like projections of dendrites), somas (body of neuron), axon hillocks (where a summation of input impulses may initiate an action potential or spike), axons, myelin sheaths (on myelinated axons), and axon terminals (containing vesicles of neurotransmitters).
Why is calcium important to neurons?
Once you have the action potential made from the influx of Na traveling down the axon depolarizing it. The action potential reaches the axon terminals, the depolarization causes Ca2+ to enter the cell and that causes the release of the neurotransmitters out of the axon terminals and into the dendrites of the next axon to continue the signaling pathway.
