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What phase of cardiac muscle action potential caused by sodium ions entering cell?
Wiki User
∙ 13y ago
The first phase of a cardiac action potential (or any action potential) involves influx of sodium ions. This phase may be called:
- The rising phase
- The depolarization phase
- Phase 0
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoNa
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What is the rapid change in membrane's potential caused by the deplariztion of a neuron?
action potential
An action potential is caused by an influx of these ions into the cell?
sodium ions
What kind of potential is it when a neuron fires?
When a signal is sent out from the nervous system it is caused a release of a neurotransmitter that releases an action potential.
What is the name of the 1rst phase of the action potential that is caused by the inward movement of sodium?
repolarization
What are the major events of an action potential and what ion changes are associated with each event?
An action potential is a chain reaction of cell events caused by an ionic gradient. One example is the firing of a nerve reaction.
B What are the major events of an action potential and what ion changes are associated with each event?
An action potential is a chain reaction of cell events caused by an ionic gradient. One example is the firing of a nerve reaction.
Is it true that an action potential is basically an electrical current?
I would say yes, but it is much more complex then that. The action potential is caused by a ion gradient, between the inner and out cell. This gradient is used to propagate an impulse.
What Energy Caused The Action?
You will have to specify what action? If you mean movement, a moving object has kinetic energy and energy could have been transferred from a release of chemical or potential energy.
What caused the cardiac arrhythmia on Elvis Presley?
2
What is cardiac atrophy?
cardiac atrophy! a wasting of heart muscle usually caused by cachexia, aging, or a mediastinal tumor.
What causes absolute refractory period?
The absolute refractory period coincides with pretty much the entire duration of the action potential. It is caused by the inactivation in neurons.
What is the difference between action potentials and synaptic potentials?
A synaptic potential exists at the INPUT of a neuron (dendrite), and an action potential occurs at the OUTPUT of a neuron (axon). (from OldGuy)(from Ilantoren:) A synaptic potential is the result of many excitatory post synaptic potentials (epsp) each one caused by the synaptic vesicles released by the pre-synaptic terminus. If there are enough of these epsp then the responses will summate and depolarize the post-synaptic membrane at the axon hillock enough to fire an action potential.
