Recent studies have provided important information on the nature of PV electrophysiology and of the role of the PVs in initiation and maintenance of AF. Reentry is responsible for the majority of ...

In lungfish, the heart is partially divided into a right and left atrium. The sinus venosus opens into the right side of the atrium. Vessels from the lung return oxygenated blood to the left atrium ...

All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...

which occurs when a blood clot forms in a deep vein of the legs, arms, or an internal organ, and pulmonary embolism, which occurs when a blood clot breaks off from a deep vein and travels to the ...

All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...