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What is trigger calcium?
In the fast response action potential of cardiac muscle, the sarcolemma rapidly depolarizes and reaches a plateau. In the plateau phase, Ca2+ released by the glycocalyx comes into the muscle cell from the extracellular fluid. This Ca2+ is called "trigger Ca2+" because it induces the release of Ca2+ from the sarcoplasmic reticulum.
Is calcium a neurotransmitter?
No, calcium itself is not a neurotransmitter BUT it is highly important in the process of the action potential. The action potential triggers the influx of calcium at the end of the terminal bouton, causing the influx of Ca2+ into the cell and this triggers for the release of the neurotransmitter. :)
Which particle is bigger Ca or Ca2 plus?
Ca2 is basically two Ca's so it's larger (the plus doesn't compensate)
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.
The major role of the sarcoplasmic reticulum is to regulate?
intracellular levels of Ca2+
When the action potential arrives synaptic vesicles containing neurotransmitters are released by what?
The voltage-gated Ca2+ channels are opened when an action potential releases neurotransmitters from a neuron. A neuron transmits nerve impulses.
What is trigger calcium?
In the fast response action potential of cardiac muscle, the sarcolemma rapidly depolarizes and reaches a plateau. In the plateau phase, Ca2+ released by the glycocalyx comes into the muscle cell from the extracellular fluid. This Ca2+ is called "trigger Ca2+" because it induces the release of Ca2+ from the sarcoplasmic reticulum.
Is calcium a neurotransmitter?
No, calcium itself is not a neurotransmitter BUT it is highly important in the process of the action potential. The action potential triggers the influx of calcium at the end of the terminal bouton, causing the influx of Ca2+ into the cell and this triggers for the release of the neurotransmitter. :)
The plateau portion of the action potential in contractile cardiac muscle cells is due to?
Slow inward diffusion of Ca2+
Which particle is bigger Ca or Ca2 plus?
Ca2 is basically two Ca's so it's larger (the plus doesn't compensate)
How do the waves of depolarization generated by the autorhythmic cells spread to the muscle cells?
Gap Junctions in the cell spread the action potential to nearby cells.
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.
What is the formula for the ionic compound Ca2 plus and Br?
Ca2+ and Br- obviously must form, CaBr2 Calcium bromide
The chemical symbol Ca2 plus refers to?
An isotope of calcium
The major role of the sarcoplasmic reticulum is to regulate?
intracellular levels of Ca2+
Ca2 plus ions separate from Mg2 plus ions?
they cannot bond together, they are separate .
How many centimoles of charge of Ca2 plus are needed to replace 2 centimoles Na plus?
1
