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Sodium.A positive ion (cation) that enters the cell (influx) rapidly when the membrane threshold is reached and the voltage gated sodium channels open.This occurs during the rising phase of an action potential, i.e. membrane depolarization beyond the threshold for activation.
An ion channel.
The chief positive intracellular ion in a resting neuron is a potassium ion. Just inside the cell of a resting neuron, the membrane is negative.
During the depolarization phase, sodium ions enter the cell through the open ion-channels (Na+ influx).
Calcium (Ca2+) channels open on the synaptic end bulb in response to depolarization (from the action potential), inducing exocytosis of synaptosomes containing neurotransmitter, resulting in neurotransmitter being released into the synaptic cleft...further propagating the signal to the next neuron or set of neurons.
Calcium is transported out of the sarcoplasm by means of special ion pumps.
myosin?
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Sodium.A positive ion (cation) that enters the cell (influx) rapidly when the membrane threshold is reached and the voltage gated sodium channels open.This occurs during the rising phase of an action potential, i.e. membrane depolarization beyond the threshold for activation.
The Ca2+ ion concentration of the sarcoplasmic reticulum will be greater in a resting muscle
k+
An ion channel.
through what can be seen as the domino effect. when depolarization opens sodium ion channel and that results to the opening of more sodium ion channels. this creates a positive feedback loop.
The chief positive intracellular ion in a resting neuron is a potassium ion. Just inside the cell of a resting neuron, the membrane is negative.
occurs when an electron is removed from an atom
During the depolarization phase, sodium ions enter the cell through the open ion-channels (Na+ influx).
Bonding is essentially electrostatic attraction between ions.