excitation

excitation /ex·ci·ta·tion/ (ek?si-ta´shun)

1. irritation or stimulation.

2. the addition of energy, such as excitation of a molecule by absorption of photons.

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direct excitation  electrostimulation of a muscle by placing the electrode on the muscle itself.

indirect excitation  electrostimulation of a muscle by placing the electrode on its nerve.

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ex·ci·ta·tion (ks-tshn)

n.

1. The act of increasing the rapidity or intensity of the physical or mental processes; stimulation.

2. The complete, all-or-none response of a nerve or muscle to an adequate stimulus, ordinarily including propagation of excitation along the membranes of the cell or cells involved.

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excitation (eksītā´shn),

n the addition of energy to a system, thereby transferring it from its ground state to an excited state.

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excitation

an act of irritation or stimulation; a condition of being excited or of responding to a stimulus; the addition of energy, as the excitation of a molecule by absorption of photons.

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excitation-conduction-contraction

in the stimulation of muscle contraction this is the coupling which occurs at the sarcolemma-sarcoplasmic reticulum junction. Mediated by the release of calcium ions in the aqueous sarcoplasm.

excitation-contraction coupling

conversion of an excitation stimulus into contraction of the effector muscle fiber; ionic calcium is the link between the two.

indirect excitation

electrostimulation of a muscle by placing the electrode on its nerve.

excitation-secretion

in the stimulation of muscular contraction this is the stimulation of secretion of acetylcholine from the vesicles in the cholinergic nerve terminals into the synaptic cleft at the nerve-muscle junction.

excitation signs

see irritation nervous signs.