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Sinus node dysfunction also known as sick sinus syndrome is a group of irregular heartbeat conditions caused by faulty electrical signals of the heart. When the heart's sinoatrial node is defective, the heart's rhythms become abnormal—typically too slow or exhibiting pauses in its function or a combination, and very rarely faster than normal ...
Isolated heart conduction system showing atrioventricular node. The AV node receives two inputs from the right atrium: posteriorly, via the crista terminalis, and anteriorly, via the interatrial septum. [8] Contraction of heart muscle cells requires depolarization and repolarization of their cell membranes. Movement of ions across cell ...
The location of the SA node is shown in blue. The bundle, represented in red, originates near the orifice of the coronary sinus, undergoes slight enlargement to form the AV node. The AV node tapers down into the bundle of His, which passes into the ventricular septum and divides into two bundle branches, the left and right bundles.
English: Heart diagram with labels in English. Blue components indicate de-oxygenated blood pathways and red components indicate oxygenated blood pathways. [1] [2]
Patients with heart tumours usually have non-specific symptoms, such as dyspnea (in particular, shortness of breath when lying down), thoracoabdominal pain (pain in the general area around the heart), fatigue, hemoptysis, nausea and vomiting, fever, weight loss, and night sweats.
Diagram of the human heart, created by Wapcaplet in Sodipodi. Cropped by ~~~ to remove white space (this cropping is not the same as Wapcaplet's original crop). == See also == * Image:Diagram of the human heart.svg - original
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The following is a list of cancer types. Cancer is a group of diseases that involve abnormal increases in the number of cells , with the potential to invade or spread to other parts of the body. [ 1 ]