electricity - energy made available by the flow of electric charge through a conductor; "they built a car that runs on electricity" electrical energy alternating current, alternating electric current, AC - an electric current that reverses direction sinusoidally; "In the US most household current is...
photoconduction,photoconductivity- change in the electrical conductivity of a substance as a result of absorbing electromagnetic radiation superconductivity- the disappearance of electrical resistance at very low temperatures arc,electric arc,electric discharge,spark,discharge- electrical conduction through a gas...
increase of the electrical conductivity and the kontraktionskraft of the heart by means of zweiphasiger irritation of the intravasalraumes of heartAugmentation of electrical conduction and contractility by biphasic cardiac pacing. A first stimulation phase is administered to the cardiac blood pool This...
The heart has a complex electrical system which regulates the contraction and relaxation of its muscular wall. This enables the heart to function by receiving blood during relaxation and pumping it out with force to the lungs and other parts of the body. The rhythm of the heart beat is contro...
There are two broad types of synapse: electrical and chemical. An electrical synapse, also known as a gap junction, is a mechanical link between two neurons that allows for the conduction of electricity. Electrical synapses contain channels that allow charges (ions) to flow from one cell to ...
through the body. Themyocardial conducting cells(1 percent of the cells) form the conduction system of the heart. Except for Purkinje cells, they are generally much smaller than the contractile cells and have few of the myofibrils or filaments needed for contraction. Their function is similar in...
One potential mechanism responsible for piezoelectric-induced cell differentiation is through electrical signals induced by the mechanical stimulation, which open calcium channels and cause an increase in Ca2+ concentration, affecting transcriptional changes reflected in cellular response (Jacob et al. 2018;...
Small ions have a relatively high mobility of around 10−4 m2 V−1 s−1, and are more strongly influenced by electric fields than are other aerosol particles. The current flowing through the air is almost entirely due to these small ions, and the conductivity σ can be written as ...
The presence of structural or electrical heterogeneity in the heart increases the probability of unidirectional block and reentrant tachycardia23,24. For sustained reentry, the conduction wavelength, defined as distance traveled by an electrical impulse while the myocardium is refractory, must be shorter...
Conducting System of the Heart Action potentials originate in the SA node and ravel across the wall of the atrium from the SA to the AV node Conducting System of the Heart (cont) Action potentials pass through the AV node and along the AV bundle, which extend from the AV node, through ...