What is the heart line system?
The heart line system concerns a unique group of cells in the heart that generates and spreads an electrical signal that causes the heart muscle to tighten and relax. Five units consist of a heart guide system - sinooatric node (SA node), atrioventricular node (AV node), its bundle, its fibers and the right and left branches of the bundle. The primary cardiac heart is a node that generates electrical impulses regularly to cause the contraction and emptying of the upper heart chambers, atrials. Furthermore, the electrical signal passes to the AV node, where it is slightly delayed to allow complete emptying of atrial before directing the bundle of its fiber and burkinje to cause the lower heart chambers to contraction the lower heart chambers. The heart conductivity system is precisely sequential contractions of the heart chambers to provide the effective effect of the pump that drives blood throughout the body.
with speed in accordance with the demand of the body after oxygen,The node of the cardiac conductivity system sends its electric stimulus to 100 million atrial cells. These cells are contracted almost immediately, in less than one third of a second. When the atrium network contractions, the blood pushes the valves between the atrial and the chambers and fills the chambers. After completely discharging the hall, the valves between the chambers closed and the atrial cells are released. At this point, the knot is recharged for another impulse.
AV node serves as an electrical signal station and the timing is precisely to create a ventricular contraction as soon as the chambers are filled. Like the high -speed rail, the volume of its and the branches of the left and right bundles will disperse the electrical signal into the chambers. The burkinje fibers further spread the signal to the farthest reach of the heart line, similar to small side railway systems. The contractual contraction occurs when the signal stimulates 400 million chamber cells. AV node is charged during another chamber filling.
sinus rhythm is a normal heart rhythm produced by sysThe theme of the heart lead. Electrocardiogram (ECG) is a graphic representation consisting of five waves that represent electrical events of the heart rhythm. The P wave, which contains the first hump on the graph, represents the stimulation of atrial cells to contraction, while another inverted hump, q wave, is the stimulation of its union in the walls separating the right and left side of the heart. After a narrow, large, pointed r wave, the stimulation of the chambers and the inverted wave s means the excitement of the burkinjové fibers. Finally, the wave refers to the relaxation of the chambers and recharges the conductive system for further contraction.