Cardiac Muscle Models

De brillation in models of cardiac muscle

The propagation of electrical activity in cardiac tissue can be modelled by reaction diiusion equations, where a tensor of diiusion coeecients represents anisotropy due to bre orientation, and excitation is represented by high order, stii diierential systems. The eeects of external electrical stimulation, as in artiical pacemakers, or in deebrillators, requires bidomain models, in which intra-a...

Defibrillation in Models of Cardiac Muscle

The propagation of electrical activity in cardiac tissue can be modelled by reaction diffusion equations, where a tensor of diffusion coefficients represents anisotropy due to fibre orientation, and excitation is represented by high-order, stiff differential systems. The effects of external electrical stimulation, as in artificial pacemakers, or in defibrillators, requires bidomain models, in w...

Relation of V max to different models of cardiac muscle.

Cardiac Muscle

1. Cardiac muscle is a striated muscle, with a sarcomere structure much like that of skeletal muscle. It has small cells (as in smooth muscle), firmly connected end-to-end at the intercalated disks. 2. The action potential in cardiac muscle is long lasting compared to the duration of the contraction, preventing a tetanic contraction. 3. Under normal circumstances, cardiac muscle operates at len...

The cardiac muscle cell.

The cardiac myocyte is the most physically energetic cell in the body, contracting constantly, without tiring, 3 billion times or more in an average human lifespan. By coordinating its beating activity with that of its 3 billion neighbours in the main pump of the human heart, over 7,000 litres of blood are pumped per day, without conscious effort, along 100,000 miles of blood vessels. A detaile...