What is an excitable tissue

The contractile apparatus of muscle fibers is under electrical control, and is activated when the membrane potential exceeds a threshold value.Our present knowledge of the disk membrane and its receptor protein rhodopsin is reviewed in the light of this model.• an ability of specialized cells to respond to certain stimuli by producing electrical signals known as action potential at its membrane.Compare between different excitable tissues in terms of resting membrane potential.Muscle (skeletal, cardiac and smooth) describe how to record the membrane potential in a single cell?The cell has been injected with a fluorescent dye to reveal all its branches.

2.1.1 overview of excitable tissues.For individual organisms, such cells organize responses to external and internal stimuli at a global level.