no
It has to do with what types of channels are open during this phase. In the repolarization phase the number of potassium channels are increased and the number of sodium channels are decreased. This allows for action potentials to not occur. Otherwise, the action potentials would add up and produce tetany.
It occurs simultaneously with the action force.
The "Ring of Fire".
yes, the action potential occurs at the nodes of Ranvier -- there are Na (sodium channels) there that are depolarized/opened to maintain the action potential.
The two forces occur at the same time. Sometimes it is a bit arbitrary which force you call "action", and which "reaction". Just remember that forces always occur in pairs.
Where dissimilar piping joins
Yes, an action potential is needed for a nerve impulse to occur.
Yes, an action potential is needed for a nerve impulse to occur.
Thrust
It has to do with what types of channels are open during this phase. In the repolarization phase the number of potassium channels are increased and the number of sodium channels are decreased. This allows for action potentials to not occur. Otherwise, the action potentials would add up and produce tetany.
The rocket is now too heavy to reach its destination
It occurs simultaneously with the action force.
The rising action in the story of "Shiva's Fire" involves the development of the central conflict surrounding the protagonist's journey towards self-discovery and enlightenment. It includes key events and challenges that propel the story forward, leading towards the climax where significant changes or revelations occur.
thrust
first law
The SA node makes the action potential for the heart. Atrial systole must occur after the action potential.
The resolution is generally after the falling action and climax.